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ID 17267
Eprint ID
17267
FullText URL
Thumnail 89_1569.pdf 1.88 MB
Title Alternative
Exercise test in atrial fibrillation
Author
Haraoka, Shoichi
Saito, Daiji
Ueda, Minoru
Ogino, Yasuhiro
Kusuhara, Shunichi
Yoshida, Hideki
Abstract
The exercise electrocardiogram was studied in the patients with atrial fibrillation who were presumably free of hyperthyroidism, severe pulmonary disease or valvular disease. Thirty-one patients with atrial fibrillation, 25 male and 6 female, were subjected to a double Master's two-step exercise test. Seventeen out of thirty-one patients (54.8%) had abnormal electrocardiograms (positive test) according to our criteria after the double two-step test. Heart rate responding to the exercise increased much more than controls reported previously form our laboratory. It was assumed that in atrial fibrillation, an abnormally excess response of heart rate to exercise caused a marked rise in myocardial oxygen demands according to an increase in cardiac work and a decrease in effective coronary perfusion time. Furthermore, atrial fibrillation, probably absolutely irregular ventricular rate, might decrease coronary flow reserve responding to increase in oxygen demand. These suggest that abnormal hemodynamic responses to the exercise result in positive test even in the cases without coronary artery disease.
Published Date
1977-12-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume89
Issue
issue11-12
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
1569
End Page
1576
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/89/11-12/89_11-12_1569/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma