start-ver=1.4
cd-journal=joma
no-vol=40
cd-vols=
no-issue=3
article-no=
start-page=560
end-page=577
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240411
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Artificial intelligence to detect noise events in remote monitoring data
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background: Remote monitoring (RM) of cardiac implantable electrical devices (CIEDs) can detect various events early. However, the diagnostic ability of CIEDs has not been sufficient, especially for lead failure. The first notification of lead failure was almost noise events, which were detected as arrhythmia by the CIED. A human must analyze the intracardiac electrogram to accurately detect lead failure. However, the number of arrhythmic events is too large for human analysis. Artificial intelligence (AI) seems to be helpful in the early and accurate detection of lead failure before human analysis.
Objective: To test whether a neural network can be trained to precisely identify noise events in the intracardiac electrogram of RM data.
Methods: We analyzed 21 918 RM data consisting of 12 925 and 1884 Medtronic and Boston Scientific data, respectively. Among these, 153 and 52 Medtronic and Boston Scientific data, respectively, were diagnosed as noise events by human analysis. In Medtronic, 306 events, including 153 noise events and randomly selected 153 out of 12 692 nonnoise events, were analyzed in a five-fold cross-validation with a convolutional neural network. The Boston Scientific data were analyzed similarly.
Results: The precision rate, recall rate, F1 score, accuracy rate, and the area under the curve were 85.8 ± 4.0%, 91.6 ± 6.7%, 88.4 ± 2.0%, 88.0 ± 2.0%, and 0.958 ± 0.021 in Medtronic and 88.4 ± 12.8%, 81.0 ± 9.3%, 84.1 ± 8.3%, 84.2 ± 8.3% and 0.928 ± 0.041 in Boston Scientific. Five-fold cross-validation with a weighted loss function could increase the recall rate.
Conclusions: AI can accurately detect noise events. AI analysis may be helpful for detecting lead failure events early and accurately.
en-copyright=
kn-copyright=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=BabaKensuke
en-aut-sei=Baba
en-aut-mei=Kensuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MorookaKen'Ichi
en-aut-sei=Morooka
en-aut-mei=Ken'Ichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=ShiraeHaruto
en-aut-sei=Shirae
en-aut-mei=Haruto
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MasudaTakuro
en-aut-sei=Masuda
en-aut-mei=Takuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=UeokaAkira
en-aut-sei=Ueoka
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=AsadaSaori
en-aut-sei=Asada
en-aut-mei=Saori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=EjiriKentaro
en-aut-sei=Ejiri
en-aut-mei=Kentaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=13
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=14
ORCID=
en-aut-name=YuasaShinsuke
en-aut-sei=Yuasa
en-aut-mei=Shinsuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=15
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Cyber-Physical Engineering Informatics Research Core, Okayama University
kn-affil=
affil-num=3
en-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University
kn-affil=
affil-num=4
en-affil=Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=13
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=14
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=15
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
en-keyword=artificial intelligence
kn-keyword=artificial intelligence
en-keyword=five-fold cross-validation
kn-keyword=five-fold cross-validation
en-keyword=intracardiac electrogram
kn-keyword=intracardiac electrogram
en-keyword=noise event
kn-keyword=noise event
en-keyword=remote monitoring
kn-keyword=remote monitoring
END
start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=10
article-no=
start-page=641
end-page=649
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=202310
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Syncope and loss of consciousness after implantation of a cardioverter-defibrillator in patients with Brugada syndrome: Prevalence and characteristics in long-term follow-up
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background Syncope is a significant prognostic factor in patients with Brugada syndrome (BrS). However, the risk of ventricular arrhythmia in patients with nonarrhythmic loss of consciousness (LOC) is similar to that in asymptomatic patients. LOC events after implantable cardioverter-defibrillator (ICD) implantation may provide insights into underlying causes of the initial LOC episode.
Objective The purpose of this study was to examine LOC characteristics following ICD implantation.
Methods We retrospectively analyzed 112 patients with BrS (mean age 47 years; 111 men) who were treated with an ICD. The patients were classified into 3 groups based on symptoms at implantation: asymptomatic (35 patients); LOC (46 patients); and ventricular tachyarrhythmia (VTA) (31 patients). We evaluated the incidence and cause of LOC during long-term follow-up after ICD implantation.
Results During mean follow-up of 12.2 years, 41 patients (37%) experienced LOC after ICD implantation. Arrhythmic LOC occurred in 5 asymptomatic patients, 14 LOC patients, and 16 patients with VTA. Nonarrhythmic LOC, similar to the initial episode, occurred after ICD implantation in 6 patients with prior LOC (2 with neurally mediated syncope and 4 with epilepsy). Most epileptic patients experienced LOC during rest or sleeping, and did not show an abnormal encephalogram during initial evaluation of the LOC episodes.
Conclusion After ICD implantation, 13% of patients had nonarrhythmic LOC similar to the initial episode. Accurate classification of LOC based on a detailed medical history is important for risk stratification, although distinguishing arrhythmic LOC from epilepsy-related LOC episodes can be challenging depending on the circumstances and characteristics of the LOC event.
en-copyright=
kn-copyright=
en-aut-name=AsadaSaori
en-aut-sei=Asada
en-aut-mei=Saori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MasudaTakuro
en-aut-sei=Masuda
en-aut-mei=Takuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=UeokaAkira
en-aut-sei=Ueoka
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=Implantable cardioverter-defibrillator
kn-keyword=Implantable cardioverter-defibrillator
en-keyword=Syncope
kn-keyword=Syncope
en-keyword=Neurally mediated syncope
kn-keyword=Neurally mediated syncope
en-keyword=Epilepsy
kn-keyword=Epilepsy
en-keyword=Ventricular tachyarrhythmia
kn-keyword=Ventricular tachyarrhythmia
END
start-ver=1.4
cd-journal=joma
no-vol=35
cd-vols=
no-issue=2
article-no=
start-page=307
end-page=316
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20231217
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Significant delayed conduction and characteristic ventricular tachycardias in patients with cardiac sarcoidosis and electrical storm
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Introduction: Electrical storm (ES) of ventricular tachyarrhythmias (VTAs) is an important cause of sudden death in patients with cardiac sarcoidosis (CS). VTAs in CS are associated with myocardial scarring and inflammation. However, little is known about the risk factors of ES in patients with CS and VTAs. The objective of this study is to clarify the characteristics and risk factors for the development of ES in patients with CS.
Methods: The study population included consecutive 52 patients with CS and sustained VTA. Twenty-five out of 52 patients experienced ES. We evaluated clinical characteristics, imaging modalities, and electrocardiogram (ECG) parameters to determine the risk factors associated with ES.
Results: Half of the patients experienced VTAs as the initial symptom of sarcoidosis, and eight patients had ES as the initial VTA episode. There were no differences in cardiac imaging abnormalities between patients with and without ES. Among ECG markers, significant QRS fragmentation (odds ratio [OR]: 7.9, p = .01) and epsilon waves (OR: 12.24, p = .02) were associated with ES. Among the ventricular tachycardia (VT) characteristics, multiple morphologies of monomorphic VTs (OR: 10.9, p < .01), short VT cycle lengths (OR: 12.5, p < .01), and polymorphic VT (OR: 13.5, p < .01) were associated with ES. Bidirectional VTs were detected in 10 patients with ES and one patient without ES. Immunosuppressive therapy relieved ES in some patients.
Conclusions: ES was common in patients with CS and VTAs. Significant depolarization abnormalities that appeared as QRS fragmentation, epsilon waves, and specific VT characteristics were associated with ES.
en-copyright=
kn-copyright=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=UeokaAkira
en-aut-sei=Ueoka
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=MasudaTakuro
en-aut-sei=Masuda
en-aut-mei=Takuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=AsadaSaori
en-aut-sei=Asada
en-aut-mei=Saori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
en-keyword=cardiac sarcoidosis
kn-keyword=cardiac sarcoidosis
en-keyword=ventricular tachycardia
kn-keyword=ventricular tachycardia
en-keyword=electrical storm
kn-keyword=electrical storm
en-keyword=ventricular fibrillation
kn-keyword=ventricular fibrillation
en-keyword=sudden cardiac death
kn-keyword=sudden cardiac death
END
start-ver=1.4
cd-journal=joma
no-vol=28
cd-vols=
no-issue=18
article-no=
start-page=2059
end-page=2066
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210719
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Incremental prognostic value of non-alcoholic fatty liver disease over coronary computed tomography angiography findings in patients with suspected coronary artery disease
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Aims This study aimed to investigate additional risk stratification benefits of hepatic steatosis (HS) concurrently assessed during coronary computed tomography angiography (CTA) in a large patient cohort with suspected stable coronary artery disease (CAD).
Methods and results In this prospective study, 1148 Japanese outpatients without a history of CAD who underwent coronary CTA for suspected stable CAD (mean age 64 ± 14 years) were included. HS, defined on CT as a hepatic-to-spleen attenuation ratio of <1.0, was examined just before the evaluation of adverse CTA findings, defined as obstructive and/or high-risk plaque. The major adverse cardiac events (MACE) were the composite of cardiac death, acute coronary syndrome, and late revascularization. The incremental predictive value of HS was evaluated using the global χ2 test and C-statistic. HS was identified in 247 (22%) patients. During a median follow-up of 3.9 years, MACE was observed in 40 (3.5%) patients. HS was significantly associated with MACE in a model that included adverse CTA findings (hazard ratio 4.01, 95% confidence interval 2.12–7.59, P < 0.001). By adding HS to the Framingham risk score and adverse CTA findings, the global χ2 score and C-statistic significantly increased from 29.0 to 49.5 (P < 0.001) and 0.74 to 0.81 (P = 0.026), respectively. In subgroup analyses in patients with diabetes mellitus and metabolic syndrome, HS had significant additive predictive value for MACE over the Framingham risk score and adverse CTA findings.
Conclusion In patients with suspected stable CAD, concurrent evaluation of HS during coronary CTA enables more accurate detection of patients at higher risk of MACE.
en-copyright=
kn-copyright=
en-aut-name=IchikawaKeishi
en-aut-sei=Ichikawa
en-aut-mei=Keishi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=OsawaKazuhiro
en-aut-sei=Osawa
en-aut-mei=Kazuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MikiTakashi
en-aut-sei=Miki
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=TodaHironobu
en-aut-sei=Toda
en-aut-mei=Hironobu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=EjiriKentaro
en-aut-sei=Ejiri
en-aut-mei=Kentaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of General Internal Medicine 3, Kawasaki Medical School General Medical Center
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Coronary artery disease
kn-keyword=Coronary artery disease
en-keyword=Computed tomography angiography
kn-keyword=Computed tomography angiography
en-keyword=Atherosclerotic plaque
kn-keyword=Atherosclerotic plaque
en-keyword=Risk assessment
kn-keyword=Risk assessment
en-keyword=Hepatic steatosis
kn-keyword=Hepatic steatosis
END
start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=10
article-no=
start-page=e028706
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230516
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Significant Delayed Activation on the Right Ventricular Outflow Tract Represents Complete Right Bundle-Branch Block Pattern in Brugada Syndrome
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background: The appearance of complete right bundle-branch block (CRBBB) in Brugada syndrome (BrS) is associated with an increased risk of ventricular fibrillation. The pathophysiological mechanism of CRBBB in patients with BrS has not been well established. We aimed to clarify the significance of a conduction delay zone associated with arrhythmias on CRBBB using body surface mapping in patients with BrS.
Methods and Results: Body surface mapping was recorded in 11 patients with BrS and 8 control patients both with CRBBB. CRBBB in control patients was transiently exhibited by unintentional catheter manipulation (proximal RBBB). Ventricular activation time maps were constructed for both of the groups. We divided the anterior chest into 4 areas (inferolateral right ventricle [RV], RV outflow tract [RVOT], intraventricular septum, and left ventricle) and compared activation patterns between the 2 groups. Excitation propagated to the RV from the left ventricle through the intraventricular septum with activation delay in the entire RV in the control group (proximal RBBB pattern). In 7 patients with BrS, excitation propagated from the inferolateral RV to the RVOT with significant regional activation delay. The remaining 4 patients with BrS showed a proximal RBBB pattern with the RVOT activation delay. The ventricular activation time in the inferolateral RV was significantly shorter in patients with BrS without a proximal RBBB pattern than in control patients.
Conclusions: The CRBBB morphology in patients with BrS consisted of 2 mechanisms: (1) significantly delayed conduction in the RVOT and (2) proximal RBBB with RVOT conduction delay. Significant RVOT conduction delay without proximal RBBB resulted in CRBBB morphology in patients with BrS.
en-copyright=
kn-copyright=
en-aut-name=MorimotoYoshimasa
en-aut-sei=Morimoto
en-aut-mei=Yoshimasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=EjiriKentaro
en-aut-sei=Ejiri
en-aut-mei=Kentaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=MasudaTakuro
en-aut-sei=Masuda
en-aut-mei=Takuro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=UeokaAkira
en-aut-sei=Ueoka
en-aut-mei=Akira
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=AsadaSaori
en-aut-sei=Asada
en-aut-mei=Saori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=13
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Therapeutics , Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Therapeutics , Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
affil-num=13
en-affil=Department of Cardiovascular Medicine ,Okayama University Graduate School of Medicine, Dentistry, Pharmaceutical Sciences
kn-affil=
en-keyword=activation pattern
kn-keyword=activation pattern
en-keyword=body surface map
kn-keyword=body surface map
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=complete right bundle-branch block
kn-keyword=complete right bundle-branch block
END
start-ver=1.4
cd-journal=joma
no-vol=86
cd-vols=
no-issue=8
article-no=
start-page=1312
end-page=1318
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=2022725
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Overview of the 86th Annual Scientific Meeting of the Japanese Circulation Society ― Cardiology Spreading Its Wings ―
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The 86th Annual Scientific Meeting of the Japanese Circulation Society was held in a web-based format on March 11-13, 2022. In accordance with the internationalization policy of the JCS, the meeting was held with the Asian Pacific Society of Cardiology Congress 2022. The main theme was "Cardiology Spreading its Wings". The number of patients with heart failure and other cardiovascular diseases is increasing dramatically, and the fields dealt with by cardiovascular medicine are also greatly expanding. This conference was both intellectually satisfying and exciting for all participants, who numbered over 14,900. The meeting was completed with great success, and the enormous amount of cooperation and support from all involved was greatly appreciated.
en-copyright=
kn-copyright=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=AkagiSatoshi
en-aut-sei=Akagi
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=TohNorihisa
en-aut-sei=Toh
en-aut-mei=Norihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=SaitoYukihiro
en-aut-sei=Saito
en-aut-mei=Yukihiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=TakayaYoichi
en-aut-sei=Takaya
en-aut-mei=Yoichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=YoshidaMasatoki
en-aut-sei=Yoshida
en-aut-mei=Masatoki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=TodaHironobu
en-aut-sei=Toda
en-aut-mei=Hironobu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=MikiTakashi
en-aut-sei=Miki
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=NakayamaRie
en-aut-sei=Nakayama
en-aut-mei=Rie
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
en-aut-name=YokohamaFumi
en-aut-sei=Yokohama
en-aut-mei=Fumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=13
ORCID=
en-aut-name=IchikawaKeishi
en-aut-sei=Ichikawa
en-aut-mei=Keishi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=14
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=15
ORCID=
en-aut-name=TaniyamaMakiko
en-aut-sei=Taniyama
en-aut-mei=Makiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=16
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=17
ORCID=
en-aut-name=AkagiTeiji
en-aut-sei=Akagi
en-aut-mei=Teiji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=18
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=19
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=20
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=13
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=14
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=15
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=16
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=17
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=18
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=19
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=20
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Cardiology
kn-keyword=Cardiology
en-keyword=Heart failure
kn-keyword=Heart failure
en-keyword=Internationalization
kn-keyword=Internationalization
END
start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=1
article-no=
start-page=8776
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220524
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Impact of shear wave dispersion slope analysis for assessing the severity of myocarditis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This study aimed to elucidate the utility of a novel ultrasound-based technique, shear wave dispersion slope (SWDS) analysis, which estimates tissue viscosity, for evaluating the severity of myocardial inflammation. Experimental autoimmune myocarditis (EAM) at different disease phases [3-week (acute phase): n = 10, 5-week (subacute phase): n = 9, and 7-week (late phase): n = 11] were developed in male Lewis rats. SWDS was measured in the right and the left ventricular free walls (RVFW and LVFW) under a retrograde perfusion condition. Histological myocardial inflammation was evaluated by CD68 staining. The accumulation of CD68-positive cells was severe in the myocardium of the EAM 3-week group. The median (interquartile range) SWDS of RVFW was significantly higher in the EAM 3-week group [9.9 (6.5-11.0) m/s/kHz] than in the control group [5.4 (4.5-6.8) m/s/kHz] (P = 0.034). The median SWDS of LVFW was also significantly higher in the EAM 3-week group [8.1 (6.4-11.0) m/s/kHz] than in the control group [4.4 (4.2-4.8) m/s/kHz] (P = 0.003). SWDS and the percentage of CD68-positive area showed a significant correlation in RVFW (R-2 = 0.64, P < 0.001) and LVFW (R-2 = 0.73, P < 0.001). This study showed that SWDS was elevated in ventricular walls with acute inflammation and also significantly correlated with the degree of myocardial inflammation. These results suggest the potential of SWDS in estimating the histological severity of acute myocarditis.
en-copyright=
kn-copyright=
en-aut-name=AmiokaNaofumi
en-aut-sei=Amioka
en-aut-mei=Naofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=TakayaYoichi
en-aut-sei=Takaya
en-aut-mei=Yoichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=KondoMegumi
en-aut-sei=Kondo
en-aut-mei=Megumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=AkazawaKaoru
en-aut-sei=Akazawa
en-aut-mei=Kaoru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=OhnoYuko
en-aut-sei=Ohno
en-aut-mei=Yuko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=IchikawaKeishi
en-aut-sei=Ichikawa
en-aut-mei=Keishi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NakayamaRie
en-aut-sei=Nakayama
en-aut-mei=Rie
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=SaitoYukihiro
en-aut-sei=Saito
en-aut-mei=Yukihiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=AkagiSatoshi
en-aut-sei=Akagi
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=13
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=14
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Kawasaki University of Medical Welfare
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=13
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=14
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
END
start-ver=1.4
cd-journal=joma
no-vol=13
cd-vols=
no-issue=1
article-no=
start-page=141
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220401
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Enhancement of pacing function by HCN4 overexpression in human pluripotent stem cell-derived cardiomyocytes
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background The number of patients with bradyarrhythmia and the number of patients with cardiac pacemakers are increasing with the aging population and the increase in the number of patients with heart diseases. Some patients in whom a cardiac pacemaker has been implanted experience problems such as pacemaker infection and inconvenience due to electromagnetic interference. We have reported that overexpression of HCN channels producing a pacemaker current in mouse embryonic stem cell-derived cardiomyocytes showed enhanced pacing function in vitro and in vivo. The aim of this study was to determine whether HCN4 overexpression in human induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) can strengthen the pacing function of the cells. Methods Human HCN4 was transduced in the AAVS1 locus of human induced pluripotent stem cells by nucleofection and HCN4-overexpressing iPSC-CMs were generated. Gene expression profiles, frequencies of spontaneous contraction and pacing abilities of HCN4-overexpressing and non-overexpressing iPSC-CMs in vitro were compared. Results HCN4-overexpressing iPSC-CMs showed higher spontaneous contraction rates than those of non-overexpressing iPSC-CMs. They responded to an HCN channel blocker and beta adrenergic stimulation. The pacing rates against parent iPSC line-derived cardiomyocytes were also higher in HCN4-overexpressing iPSC-CMs than in non-overexpressing iPSC-CMs. Conclusions Overexpression of HCN4 showed enhancement of I-f current, spontaneous firing and pacing function in iPSC-CMs. These data suggest this transgenic cell line may be useful as a cardiac pacemaker.
en-copyright=
kn-copyright=
en-aut-name=SaitoYukihiro
en-aut-sei=Saito
en-aut-mei=Yukihiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=SugiyamaHiroki
en-aut-sei=Sugiyama
en-aut-mei=Hiroki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=AkagiSatoshi
en-aut-sei=Akagi
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Hospital
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=3
en-affil=Department of Chronic Kidney Disease and Cardiovascular Disease, Dentistry, and Pharmaceutical Science, Okayama University Graduate School of Medicine
kn-affil=
affil-num=4
en-affil=Department of Internal Medicine, Okayama Saiseikai General Hospital
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Therapeutics, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
en-keyword=Hyperpolarization-activated cyclic nucleotide-gated potassium channel 4
kn-keyword=Hyperpolarization-activated cyclic nucleotide-gated potassium channel 4
en-keyword=Human induced pluripotent stem cell-derived cardiomyocytes
kn-keyword=Human induced pluripotent stem cell-derived cardiomyocytes
en-keyword=Pacing
kn-keyword=Pacing
END
start-ver=1.4
cd-journal=joma
no-vol=79
cd-vols=
no-issue=3
article-no=
start-page=446
end-page=452
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20223
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Fragmented QRS as a predictor of cardiac events in patients with cardiac sarcoidosis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background: Multiple spikes within the QRS complex, known as fragmented QRS (fQRS),
are associated with the occurrences of ventricular arrhythmic events (VAEs) in patients with
Brugada syndrome and hypertrophic cardiomyopathy. However, the association between
fQRS and occurrence of VAEs in patients with cardiac sarcoidosis (CS) has not been
elucidated.
Methods: We evaluated the associations between fQRS and cardiac events including VAEs
(non-sustained ventricular tachycardia [NSVT], sustained ventricular tachycardia [VT], and
ventricular fibrillation [VF]), hospitalization for heart failure, and all cause death in 68
patients with CS (30 patients with fQRS vs. 38 patients without fQRS) over a 5-year period.
Results: Cardiac events occurred in 22 patients with fQRS and 18 patients without fQRS
(73% vs. 47%, P=0.009). Of the cardiac events that occurred in CS patients, VAEs occurred
more frequently in patients with fQRS than in patients without fQRS (VAEs: 70% vs. 45%,
P=0.017; NSVT: 70% vs. 45%, P=0.010; VT: 43% vs. 18%, P=0.011, and VF: 6.7% vs.
2.6%, P=0.34), whereas there was no significant difference in hospitalization for heart failure
or all-cause death between patients with and those without fQRS (hospitalization for heart
failure: 6.7% vs. 5.3%, P=0.75; all-cause death: 6.7% vs. 5.3%, P=0.64). Multivariate analysis
showed that fQRS in the baseline ECG was independently associated with VAEs (hazard ratio
[HR]: 2.21, 95% confidence interval [CI]: 1.15–4.25, P=0.017).
Conclusion: fQRS is a predictor of VAEs in patients with CS.
en-copyright=
kn-copyright=
en-aut-name=OguraSoichiro
en-aut-sei=Ogura
en-aut-mei=Soichiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=AkagiSatoshi
en-aut-sei=Akagi
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=TohNorihisa
en-aut-sei=Toh
en-aut-mei=Norihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=TakayaYoichi
en-aut-sei=Takaya
en-aut-mei=Yoichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=WatanabeAtsuyuki
en-aut-sei=Watanabe
en-aut-mei=Atsuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
END
start-ver=1.4
cd-journal=joma
no-vol=6
cd-vols=
no-issue=1
article-no=
start-page=ytac003
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2022
dt-pub=20220113
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Pacemaker implantation via femoral vein and successful arrhythmia management in an elderly patient with Fontan circulation: a case report
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background The frequency of arrhythmias increases after the Fontan operation over time; atrial tachycardia (AT) and sinus node dysfunction (SND) are frequently observed. Case summary Our patient was 63-year-old woman who underwent a lateral tunnel Fontan operation for double outlet right ventricle at age 36. She experienced paroxysmal AT for 1 year, and antiarrhythmic medication was not feasible due to symptomatic SND. Computed tomography revealed a 45 mm-sized thrombus in the high right atrium (RA). The patient had three coexisting conditions: paroxysmal AT, symptomatic SND, and the right atrial thrombus, for which total cavopulmonary connection conversion and epicardial pacemaker implantation (PMI) would have been effective; however, given her age and comorbidities, surgical treatment was considered high risk. Catheter ablation was avoided because of the right atrial thrombus. Finally, a transvenous pacemaker was implanted via the right femoral vein to avoid the right atrial thrombus and severe venous tortuosity from the left subclavian vein to the RA. After PMI, the patient was prescribed amiodarone and bisoprolol for AT suppression. Atrial tachycardia occurred once in the third month after discharge. We increased the dose of amiodarone, and she has been tachycardia-free. Discussion Transvenous PMI must be considered in cases where open thoracic surgery or catheter ablation cannot be performed. This is the first report of transvenous PMI via the right femoral vein and successful AT and SND management in an elderly Fontan patient.
en-copyright=
kn-copyright=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
en-keyword=Transvenous pacemaker
kn-keyword=Transvenous pacemaker
en-keyword=Fontan operation
kn-keyword=Fontan operation
en-keyword=Sinus node dysfunction
kn-keyword=Sinus node dysfunction
en-keyword=Atrial tachycardia
kn-keyword=Atrial tachycardia
en-keyword=Case report
kn-keyword=Case report
END
start-ver=1.4
cd-journal=joma
no-vol=
cd-vols=
no-issue=
article-no=
start-page=1
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210810
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Who is at high-risk in J wave syndromes?
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
affil-num=1
en-affil=Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=Early repolarization syndrome
kn-keyword=Early repolarization syndrome
en-keyword=J wave syndrome
kn-keyword=J wave syndrome
END
start-ver=1.4
cd-journal=joma
no-vol=4
cd-vols=
no-issue=5
article-no=
start-page=
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20200907
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Ablation for idiopathic left ventricular tachycardia in a patient with double outlet right ventricle who underwent Fontan operation: a case report
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background
The incidence of ventricular tachycardia (VT) in patients following Fontan operation is reported as 3.5%. Furthermore, in patients with repaired double outlet right ventricle (DORV), scar-related VT and outflow tract VT have been reported; however, Purkinje-related VT has not previously been reported. In this report, we present the case of idiopathic left VT (ILVT) in a patient with DORV who underwent Fontan operation.
Case summary
A 31-year-old man was diagnosed as having DORV with complete atrioventricular defect at birth. When he was 17 years old, he underwent surgical repair, including extracardiac Fontan operation and common atrioventricular valve replacement. Five years later, VT was detected. Since some medications were ineffective in suppressing VT, he was referred to our hospital for definitive treatment. Ventricular tachycardia was induced by atrial and ventricular programmed electrical stimulations. The mechanism of the VT was determined to be re-entry. The earliest activation site was located at the mid-inferior septum of the hypoplastic left ventricle, in which Purkinje potentials were observed before the local ventricular electrogram. Radiofrequency catheter ablation (RFCA) was performed at this site to eliminate VT.
Discussion
Most VTs originate from surgical scars in patients with congenital heart disease. Catheter ablation was feasible in scar-related VT. To the best of our knowledge, this is the first report of ILVT treated successfully with RFCA in a DORV patient who had undergone Fontan operation.
en-copyright=
kn-copyright=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
kn-affil=
en-keyword=Idiopathic left ventricular tachycardia
kn-keyword=Idiopathic left ventricular tachycardia
en-keyword=Double outlet right ventricle
kn-keyword=Double outlet right ventricle
en-keyword=Fontan operation
kn-keyword=Fontan operation
en-keyword=Purkinje potential
kn-keyword=Purkinje potential
en-keyword=Case report
kn-keyword=Case report
END
start-ver=1.4
cd-journal=joma
no-vol=16
cd-vols=
no-issue=3
article-no=
start-page=e0245502
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210304
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Usefulness of right ventriculography compared with computed tomography for ruling out the possibility of lead perforation before lead extraction
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Purpose High-risk patients can be identified by preprocedural computed tomography (CT) before lead extraction. However, CT evaluation may be difficult especially for lead tip identification due to artifacts in the leads. Selective right ventriculography (RVG) may enable preprocedural evaluation of lead perforation. We investigated the efficacy of RVG for identifying right ventricular (RV) lead perforation compared with CT in patients who underwent lead extraction. Methods Ninety-five consecutive patients who were examined by thin-section non-ECG-gated multi-detector CT and RVG before lead extraction were investigated retrospectively. Newly recognized pericardial effusion after lead extraction was used as a reference standard for lead perforation. We analyzed the prevalence of RV lead perforation diagnosed by each method. The difference in the detection rates of lead perforation by RVG and CT was evaluated. Results Of the 115 RV leads in the 95 patients, lead perforation was diagnosed for 35 leads using CT, but the leads for 29 (83%) of those 35 leads diagnosed as lead perforation by CT were shown to be within the right ventricle by RVG. Three patients with 5 leads could not be evaluated by CT due to motion artifacts. The diagnostic accuracies of RVG and CT were significantly different (p < 0.001). There was no complication of pericardial effusion caused by RV lead extraction. Conclusion RVG for identification of RV lead perforation leads to fewer false-positives compared to non-ECG-gated CT. However, even in cases in which lead perforation is diagnosed, most leads may be safely extracted by transvenous lead extraction.
en-copyright=
kn-copyright=
en-aut-name=AsadaSaori
en-aut-sei=Asada
en-aut-mei=Saori
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=ShinyaTakayoshi
en-aut-sei=Shinya
en-aut-mei=Takayoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MiyoshiAkihito
en-aut-sei=Miyoshi
en-aut-mei=Akihito
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=MorimotoYoshimasa
en-aut-sei=Morimoto
en-aut-mei=Yoshimasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Pediatric Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
END
start-ver=1.4
cd-journal=joma
no-vol=20
cd-vols=
no-issue=1
article-no=
start-page=2021
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2021
dt-pub=20210107
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Prognostic value of non-alcoholic fatty liver disease for predicting cardiovascular events in patients with diabetes mellitus with suspected coronary artery disease: a prospective cohort study
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background
Risk stratification of cardiovascular events in patients with type 2 diabetes mellitus (T2DM) has not been established. Coronary artery calcium score (CACS) and non-alcoholic fatty liver disease (NAFLD) are independently associated with cardiovascular events in T2DM patients. This study examined the incremental prognostic value of NAFLD assessed by non-enhanced computed tomography (CT) in addition to CACS and Framingham risk score (FRS) for cardiovascular events in T2DM patients.
Methods
This prospective pilot study included 529 T2DM outpatients with no history of cardiovascular disease who underwent CACS measurement because of suspected coronary artery disease. NAFLD was defined on CT images as a liver:spleen attenuation ratio < 1.0. Cardiovascular events were defined as cardiovascular death, nonfatal myocardial infarction, late coronary revascularization, nonfatal stroke, or hospitalization for heart failure.
Results
Among 529 patients (61% men, mean age 65 years), NAFLD was identified in 143 (27%). Forty-four cardiovascular events were documented during a median follow-up of 4.4 years. In multivariate Cox regression analysis, NAFLD, CACS, and FRS were associated with cardiovascular events (hazard ratios and 95% confidence intervals 5.43, 2.82–10.44, p < 0.001; 1.56, 1.32–1.86, p < 0.001; 1.23, 1.08–1.39, p = 0.001, respectively). The global χ2 score for predicting cardiovascular events increased significantly from 27.0 to 49.7 by adding NAFLD to CACS and FRS (p < 0.001). The addition of NAFLD to a model including CACS and FRS significantly increased the C-statistic from 0.71 to 0.80 (p = 0.005). The net reclassification achieved by adding CACS and FRS was 0.551 (p < 0.001).
Conclusions
NAFLD assessed by CT, in addition to CACS and FRS, could be useful for identifying T2DM patients at higher risk of cardiovascular events.
en-copyright=
kn-copyright=
en-aut-name=IchikawaKeishi
en-aut-sei=Ichikawa
en-aut-mei=Keishi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=OsawaKazuhiro
en-aut-sei=Osawa
en-aut-mei=Kazuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MikiTakashi
en-aut-sei=Miki
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=TodaHironobu
en-aut-sei=Toda
en-aut-mei=Hironobu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=EjiriKentaro
en-aut-sei=Ejiri
en-aut-mei=Kentaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=YoshidaMasatoki
en-aut-sei=Yoshida
en-aut-mei=Masatoki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NanbaYusuke
en-aut-sei=Nanba
en-aut-mei=Yusuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=11
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=12
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=11
en-affil=Department of Cardiovascular Therapeutics, Dentistry, and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
affil-num=12
en-affil=Department of Cardiovascular Medicine, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine
kn-affil=
en-keyword=Cardiovascular disease
kn-keyword=Cardiovascular disease
en-keyword=Computed tomography
kn-keyword=Computed tomography
en-keyword=Coronary artery calcium
kn-keyword=Coronary artery calcium
en-keyword=Non-alcoholic fatty liver disease
kn-keyword=Non-alcoholic fatty liver disease
en-keyword=Risk stratification
kn-keyword=Risk stratification
END
start-ver=1.4
cd-journal=joma
no-vol=9
cd-vols=
no-issue=23
article-no=
start-page=e016907
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20201123
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Significance of Exercise-Related Ventricular Arrhythmias in Patients With Brugada Syndrome
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background
Sinus tachycardia during exercise attenuates ST‐segment elevation in patients with Brugada syndrome, whereas ST‐segment augmentation after an exercise test is a high‐risk sign. Some patients have premature ventricular contractions (PVCs) related to exercise, but the significance of exercise‐related PVCs in patients with Brugada syndrome is still unknown. The objective of this study was to determine the significance of exercise‐related PVCs for predicting occurrence of ventricular fibrillation (VF) in patients with Brugada syndrome.
Methods and Results
The subjects were 307 patients with Brugada syndrome who performed a treadmill exercise test. We evaluated the occurrence of PVCs at rest, during exercise and at the peak of exercise, and during recovery after exercise (0–5 minutes). We followed the patients for 92±68 months and evaluated the occurrence of VF. PVCs occurred in 82 patients (27%) at the time of treadmill exercise test: PVCs appeared at rest in 14 patients (4%), during exercise in 60 patients (20%), immediately after exercise (0–1.5 minutes) in 28 patients (9%), early after exercise (1.5–3 minutes) in 18 patients (6%), and late after exercise (3–5 minutes) in 12 patients (4%). Thirty patients experienced VF during follow‐up. Multivariable analysis including symptoms, spontaneous type 1 ECG, and PVCs in the early recovery phase showed that these factors were independently associated with VF events during follow‐up.
Conclusions
PVCs early after an exercise test are associated with future occurrence of VF events. Rebound of vagal nerve activity at the early recovery phase would promote ST‐segment augmentation and PVCs in high‐risk patients with Brugada syndrome.
en-copyright=
kn-copyright=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=AsadaSaori T.
en-aut-sei=Asada
en-aut-mei=Saori T.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MiyamotoMasakazu
en-aut-sei=Miyamoto
en-aut-mei=Masakazu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MorimotoYoshimasa
en-aut-sei=Morimoto
en-aut-mei=Yoshimasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=KimuraTomonari
en-aut-sei=Kimura
en-aut-mei=Tomonari
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MizunoTomofumi
en-aut-sei=Mizuno
en-aut-mei=Tomofumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=WatanabeAtsuyuki
en-aut-sei=Watanabe
en-aut-mei=Atsuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry
kn-affil=
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=exercise test
kn-keyword=exercise test
en-keyword=premature ventricular contractions
kn-keyword=premature ventricular contractions
en-keyword=sudden death
kn-keyword=sudden death
en-keyword=ventricular fibrillation
kn-keyword=ventricular fibrillation
END
start-ver=1.4
cd-journal=joma
no-vol=84
cd-vols=
no-issue=3
article-no=
start-page=487
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20200225
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=New Appearance of Fragmented QRS as a Predictor of Ventricular Arrhythmic Events in Patients With Hypertrophic Cardiomyopathy
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Background: Multiple spikes in the QRS complex (fragmented QRS [fQRS]) on 12-lead electrocardiography have been associated with ventricular arrhythmic events (VAEs) in patients with hypertrophic cardiomyopathy (HCM). The aim of this study was to assess the association between new appearances of fQRS and cardiac events in patients with HCM.Methods and Results:The association between baseline fQRS and cardiac events, namely VAEs, heart failure-related hospitalization, and all-cause death, was evaluated retrospectively in 146 HCM patients (46 patients with fQRS, 100 without fQRS). The median follow-up was 5.3 years. Cardiac events occurred in 29 patients with baseline fQRS and 32 patients without baseline fQRS (63% vs. 32%; P<0.001). VAEs occurred in a significantly larger percentage of patients with than without baseline fQRS (54% vs. 23%, respectively; P<0.001). Of the 100 patients without baseline fQRS, 33 had a new appearance of fQRS during the 4.6-year follow-up, whereas 67 did not. VAEs occurred more frequently in the 33 patients with the appearance of fQRS than in those without (42% vs. 13%, respectively; P=0.001). Multivariable analysis showed that the new appearance of fQRS documented before VAEs was associated with VAEs (hazard ratio 4.29, 95% confidence interval 1.81-10.2; P=0.001).
Conclusions: The new appearance of fQRS was associated with an increased risk of VAEs in HCM patients.
en-copyright=
kn-copyright=
en-aut-name=OguraSoichiro
en-aut-sei=Ogura
en-aut-mei=Soichiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=TohNorihisa
en-aut-sei=Toh
en-aut-mei=Norihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=NakagawaKoji
en-aut-sei=Nakagawa
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=WatanabeAtsuyuki
en-aut-sei=Watanabe
en-aut-mei=Atsuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=7
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=8
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=9
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
affil-num=10
en-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
kn-affil=
en-keyword=Electrocardiography
kn-keyword=Electrocardiography
en-keyword=Fragmented QRS
kn-keyword=Fragmented QRS
en-keyword=Hospitalization
kn-keyword=Hospitalization
en-keyword=Hypertrophic cardiomyopathy
kn-keyword=Hypertrophic cardiomyopathy
en-keyword=Ventricular arrhythmia.
kn-keyword=Ventricular arrhythmia.
END
start-ver=1.4
cd-journal=joma
no-vol=5
cd-vols=
no-issue=10
article-no=
start-page=501
end-page=504
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2019
dt-pub=20190716
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Open chest epicardial mapping in an asymptomatic patient with Brugada syndrome
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=
en-copyright=
kn-copyright=
en-aut-name=WatanabeAtsuyuki
en-aut-sei=Watanabe
en-aut-mei=Atsuyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=KawadaSatoshi
en-aut-sei=Kawada
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=TachibanaMotomi
en-aut-sei=Tachibana
en-aut-mei=Motomi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=MorimotoYoshimasa
en-aut-sei=Morimoto
en-aut-mei=Yoshimasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
affil-num=1
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=2
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=3
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=4
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=5
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
affil-num=6
en-affil=Department of Cardiovascular Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
en-keyword=Asymptomatic
kn-keyword=Asymptomatic
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=Catheter ablation
kn-keyword=Catheter ablation
en-keyword=Epicardial mapping
kn-keyword=Epicardial mapping
en-keyword=Open chest surgery
kn-keyword=Open chest surgery
END
start-ver=1.4
cd-journal=joma
no-vol=63
cd-vols=
no-issue=20
article-no=
start-page=2131
end-page=2138
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2014
dt-pub=20140527
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Electrocardiographic Parameters and Fatal Arrhythmic Events in Patients With Brugada Syndrome
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Objectives This study aimed to determine the usefulness of the combination of several electrocardiographic markers on risk assessment of ventricular fibrillation (VF) in patients with Brugada syndrome (BrS).
Background Detection of high-/low-risk BrS patients using a noninvasive method is an important issue in the clinical setting. Several electrocardiographic markers related to depolarization and repolarization abnormalities have been reported, but the relationship and usefulness of these parameters in VF events are unclear.
Methods Baseline characteristics of 246 consecutive patients (236 men; mean age, 47.6 +/- 13.6 years) with a Brugada-type electrocardiogram, including 13 patients with a history of VF and 40 patients with a history of syncope episodes, were retrospectively analyzed. During the mean follow-up period of 45.1 months, VF in 23 patients and sudden cardiac death (SCD) in 1 patient were observed. Clinical/ genetic and electrocardiographic parameters were compared with VF/SCD events.
Results On univariate analysis, a history of VF and syncope episodes, paroxysmal atrial fibrillation, spontaneous type 1 pattern in the precordial leads, and electrocardiographic markers of depolarization abnormalities (QRS duration >= 120 ms, and fragmented QRS [f-QRS]) and those of repolarization abnormalities (inferolateral early repolarization [ER] pattern and QT prolongation) were associated with later cardiac events. On multivariable analysis, a history of VF and syncope episodes, inferolateral ER pattern, and f-QRS were independent predictors of documented VF and SCD (odds ratios: 19.61, 28.57, 2.87, and 5.21, respectively; p < 0.05). Kaplan-Meier curves showed that the presence/ absence of inferolateral ER and f-QRS predicted a worse/better prognosis (log-rank test, p < 0.01).
Conclusions The combination of depolarization and repolarization abnormalities in BrS is associated with later VF events. The combination of these abnormalities is useful for detecting high-and low-risk BrS patients.
en-copyright=
kn-copyright=
en-aut-name=TokiokaKoji
en-aut-sei=Tokioka
en-aut-mei=Koji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=KusanoKengo F.
en-aut-sei=Kusano
en-aut-mei=Kengo F.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=MiuraDaiji
en-aut-sei=Miura
en-aut-mei=Daiji
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=NishiiNobuhiro
en-aut-sei=Nishii
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=NagaseSatoshi
en-aut-sei=Nagase
en-aut-mei=Satoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=KohnoKunihisa
en-aut-sei=Kohno
en-aut-mei=Kunihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=OheTohru
en-aut-sei=Ohe
en-aut-mei=Tohru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=2
en-affil=
kn-affil=Natl Cerebral & Cardiovasc Ctr, Dept Cardiovasc Med
affil-num=3
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=4
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=5
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=6
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=7
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=8
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=9
en-affil=
kn-affil=Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Cardiovasc Med
affil-num=10
en-affil=
kn-affil=Sakakibara Heart Inst Okayama
en-keyword=Brugada syndrome
kn-keyword=Brugada syndrome
en-keyword=early repolarization
kn-keyword=early repolarization
en-keyword=fragmented QRS
kn-keyword=fragmented QRS
en-keyword=noninvasive risk assessment
kn-keyword=noninvasive risk assessment
en-keyword=ventricular fibrillation
kn-keyword=ventricular fibrillation
END
start-ver=1.4
cd-journal=joma
no-vol=19
cd-vols=
no-issue=4
article-no=
start-page=E35
end-page=E39
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2013
dt-pub=201308
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Serum cystatin C as a biomarker of cardiac diastolic dysfunction in patients with cardiac disease and preserved ejection fraction
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Diastolic dysfunction of the heart is correlated with cardiac mortality. Serum cystatin C (CysC) is an endogenous marker of kidney function. It is not clear whether serum CysC is associated with diastolic dysfunction in patients with varying cardiac conditions with concomitant diastolic abnormalities and preserved ejection fraction (EF). The authors measured serum CysC levels in patients with cardiac diseases and examined the relationships between serum CysC levels and diastolic function. Serum CysC was measured and echocardiography was performed in 124 consecutive patients with cardiac diseases. Transmitral flow (TMF) patterns surrogating diastolic function were categorized into two groups: a normal group and an abnormal group. Serum CysC and BNP showed a significant positive correlation. There were no significant differences in serum CysC among those cardiac diseases. Seventy-eight patients with cardiac disease and preserved EF (left ventricular EF ≥50%) and without renal dysfunction (estimated glomerular filtration rate ≥60 mL/minute/1.73 m(2) ) were examined. Multivariate linear regression analysis demonstrated that left atrium diameter and abnormal TMF patterns were independent determinants of serum CysC. Furthermore, patients with elevated serum CysC levels had poor prognosis. Serum CysC is associated with diastolic dysfunction in patients with various cardiac diseases and preserved EF. Serum CysC might be a biomarker of cardiac diastolic dysfunction in patients with preserved EF.
en-copyright=
kn-copyright=
en-aut-name=NosakaKazumasa
en-aut-sei=Nosaka
en-aut-mei=Kazumasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=
en-aut-name=NakamuraKazufumi
en-aut-sei=Nakamura
en-aut-mei=Kazufumi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=
en-aut-name=KusanoKengo
en-aut-sei=Kusano
en-aut-mei=Kengo
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=
en-aut-name=TohNorihisa
en-aut-sei=Toh
en-aut-mei=Norihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=
en-aut-name=TadaTakeshi
en-aut-sei=Tada
en-aut-mei=Takeshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=
en-aut-name=MiyoshiToru
en-aut-sei=Miyoshi
en-aut-mei=Toru
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=
en-aut-name=DoiMasayuki
en-aut-sei=Doi
en-aut-mei=Masayuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=
en-aut-name=KohnoKunihisa
en-aut-sei=Kohno
en-aut-mei=Kunihisa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=
en-aut-name=MoritaHiroshi
en-aut-sei=Morita
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
ORCID=
en-aut-name=ItoHiroshi
en-aut-sei=Ito
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=10
ORCID=
affil-num=1
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=2
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=3
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=4
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=5
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=6
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=7
en-affil=
kn-affil=Department of Cardiology, Kagawa Prefectural Central Hospital
affil-num=8
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=9
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
affil-num=10
en-affil=
kn-affil=Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
END