このエントリーをはてなブックマークに追加
ID 16185
Eprint ID
16185
FullText URL
Thumnail 98_299.pdf 3.77 MB
Title Alternative
Body surface isopotential maps of patients with the atrial septal defect of the secundum type
Author
Nagahana, Haruki
Abstract
The effect of right ventricular overloading on body surface isopotential maps (maps) was investigated in 42 patients with the atrial septal defect of the secundum type (ASD) and isolated incomplete right bundle branch block without significant cardiovascular disorders. The patients were divided into two groups according to the presence or absence of right ventricular pressure overloading. Thirty-one patients had right ventricular volume overloading alone, ASD (V), with right ventricular systolic pressure of less than 59mmHg, and 11 patients had right ventricular volume overloading accompanied with pressure overloading, ASD(V+P), with right ventricular systolic pressure equal to or greater than 60mmHg. In ASD (V), effects of RV volume overloading appeared in the positive potentials of the right anterior chest leads from the right midaxillar line to the anterior median line, and in the negative potentials of the left lateral chest leads from the left midclavicular line to the left posterior axillar line. The addition of pressure overloading, observed in ASD (V+P), affected the positive and the negative potentials over a slightly larger area than in ASD(V). For estimating right ventricular pressure with maps semiquantitatively, the relationship between right ventricular systolic pressure and potentials of 87 lead-points utilized in maps were investigated in all 42 patients. Linear regression analysis revealed that the sum of the amplitude of the maximum positive potential in leads D3, D4 and D5 and the amplitude of the maximum negative potential in leads F3, F4 and G3 correlated well with right ventricular systolic pressure (r=0.79, p<0.005). In 20 patients who received surgical correction, postoperation maps were compared with the maps obtained before operation. The patterns were not significantly different between the two maps, but the positive and negative potentials decreased in the late stage of ventricular depolarization. The Breakthrough minimun shifted to the right, with no significant changes in appearance time, after the operation.
Keywords
体表図電位図
心房中隔欠損症
右脚ブロック
右室負荷
Published Date
1986-04-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume98
Issue
issue3-4
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
299
End Page
312
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/98/3-4/98_3-4_299/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/index.html
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma