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ID 16194
Eprint ID
16194
FullText URL
Thumnail 98_343.pdf 4.22 MB
Title Alternative
Body surface mapping in evalating the size of right ventricular infarctions in the dog
Author
Ihoriya, Fumio
Abstract
To estimate quantitatively the infarct size of right ventricular infarctions (RVI), I studied the pre- and post-infarction body surface maps of 10 dogs with transmural RVI and 5 dogs with non-transmural RVI. The maximum decrease in the potential at all lead points was 0.8mV through the ventricular depolarization after a sham operation in 4 dog. Thus, a 1mV postoperative decrease was considered significant. In transmural RVI, the minimum and negative potential zone appeared early in the ventricular depolarization on the right anterior chest surface. The negative potential zone continued to the middle stage of depolarization the right chest surface, and afterward occupied a larger part of anterior surface. The maximum and positive potential zone shifted leftward in the early and middle stages of QRS. In transmural RVI, ΣQ16 (the sum total of the voltages which postoperatively decreased 16msec after the onset of QRS) was much greater than the ΣQ16 of non-transmural RVI and sham operation. Especially, reductions of ΣQ16 greater than 15mV were found in transmural RVI. Q waves were found on right precordial leads (V(2R) through V(5R)) in 5 cases of trans-mural RVI. The total number of leads with decreased potential over 1mV (Σn) and ΣQ16 from maps correlated well with the histologically determined infarct size of RVI. These data suggest that Σn and ΣQ16 would be good clinical indices for diagnosing quantitatively the infarct size of RVI. Maps obtained after intravenous administration of isoproterenol enabled the discrimination between non-transmural RVI and sham operation.
Keywords
体表面心臓電位図
右室梗塞
QRS電位図
ST
T電位図
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
343
End Page
355
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_343/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/index.html
language
日本語
OAI-PMH Set
岡山大学
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Sort Key
12
Eprints Journal Name
joma