Electrocardiographic changes during selective coronary angiography with refercnce to changes in V1-6 Takeshi Tsugu 1 , Masayuki Nagata 2 , Hideaki Akiyama 2 , Hajime Yamazaki 2 , Kumiko Noya 3 , Shunnosuke Handa 2 , Yoshiro Nakamura 2 1National Saitama Hospital, Internal Medicine 2Keio University Hospital, Internal Medicine 3Saitama Central Hospital, Internal Medicine pp.287-291
Published Date 1984/3/15
DOI https://doi.org/10.11477/mf.1404204409
  • Abstract
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Twelve-leads electrocardiograms were obtained during coronary angiography in 73 cases. In cases with normal coronary artery, right coronary artery injections of the contrast medium induced appear-ance of late "r" or increment of R wave amplitude in lead V1in one-third of the cases, and increment of S in lead V5,6 in three-forth of the cases. Left coronary injections induced increment of R in lead V5,6 in all of the cases with normal coronary artery and normal anteroapical wall motion.

Left ventricular dimensions were also obtained echocardiographically under the fixed heart rate. Left coronary injections resulted in the increase of the end-systolic dimension (p<.005), but not the end-diastolic dimension (p>.05).

These electrocardiographic and echocardiograp-hic changes during coronary angiography were as-sumed to be due to the direct effects of contrast medium on the perfused myocardium, and also the increase of R wave amplitude in lead V5,6 during left coronary injection was presumed not to be due to the "Brody effect".

Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.


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