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ID 16499
Eprint ID
16499
フルテキストURL
Thumnail 93_127.pdf 833 KB
タイトル(別表記)
Effect of electrode (I, E, C, A, M) level on the vectorcardiograms with the Frank lead system Part II. Clinical studies using the three step and Y-Precordial technics
著者
生長 豊健 岡山大学医学部第一内科学教室
抄録
The transverse level of chest electrodes is important in the accuracy of the dipole component derived from the Frank lead system of vectorcardiography. The transverse level of the electrical center of the heart vector was determined in supine subjects utilizing a three step technic and a Y-Precordial technic, and the effect of shift in the electrode level from the fifth intercostal space to the level of electrical center was studied. Vectorcardiograms were obtained from 154 adult male subjects: normal men (46), hypertensive patients with normal electrocardiogram (45), hypertensive patients with high voltage of the QRS complex (34) and hypertensive patients showing high voltage of the QRS complex with S-T segment and T wave changes (29). The following results were obtained: 1) The cases in which the electrical center were present above the fifth intercostal space were more than those in which it was below that intercostal space. However, in most cases (101 out of 126 cases, 80.2%), the electrical center was present within ± 20 mm of the level of the fifth intercostal space. In 28 out of 154 cases, these technics could not indicate the level of the electrical center. 2) With chest electrodes shifted from the level of the fifth intercostal space to the level of the electrical center, the magnitude of each component of the vectorcardiogram changes; especially the maximum posterior component increased in all groups regardless of whether the electrical center was above or below the fifth intercostal space. However, in most cases these changes were equal to or smaller than beat-to-beat or observer variation.
キーワード
Frank法ベクトル心電図
胸部導子
心中心レベル
Three step technic
Y-Precordial technic
lead vector
発行日
1981-02-28
出版物タイトル
岡山医学会雑誌
出版物タイトル(別表記)
Journal of Okayama Medical Association
93巻
1-2号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
127
終了ページ
142
ISSN
0030-1558
NCID
AN00032489
資料タイプ
学術雑誌論文
オフィシャル URL
https://www.jstage.jst.go.jp/article/joma1947/93/1-2/93_1-2_127/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/index.html
言語
Japanese
著作権者
岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma