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Coronary flow and myocardial metabolism during ischemic attack:Effort angina vs vasospastic angina Shinsuke Nanto 1 , Kiyomu Ishikawa 1 , Koichi Taniura 1 , Yukihiro Koretsune 1 , Akio Kohama 1 , Masaaki Uematsu 1 , Jun Tamai 1 , Takehito Taniura 1 , Kazuhisa Kodama 1 , Masayoshi Mishima 2 , Tsunehiko Kuzuya 2 , Michitoshi Inoue 2 1Cardiac Intensive Care Unit of Osaka Police Hospital 2The First Department of Medicine, Osaka University Medical School pp.299-303
Published Date 1984/3/15
DOI https://doi.org/10.11477/mf.1404204411
  • Abstract
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To test the hypothesis that the anerobic metabol-ic change in variant angina is more enhanced than in effort angina, coronary sinus flow (CSF) and coronary AV oxygen difference (AVDO2) and myo-cardial lactate extraction ratio (LER) were deter-mined during anginal attack in 8 patients (pts) witheffort angina (EA), 9 pts with variant angina (VA1) and 8 pts with vasospastic angina who show ST depression in ECG at anginal attack (VA2). Angina was provocated by rapid atrial pacing in EA and by intravenous ergonovine maleate in VA1 and VA2. Before and immediately after anginal attack, ECG and coronary angiogram were performed and coro-nary angiogram were performed and coronary sinus flow was also measured by continuous thermodilu-tion technique with Wilton Webster catheter. At the same time, paired arterial and coronary sinus blood sampling were analyzed for oxygen and lactate content. Among three groups, there were no significant difference in control values of CSF, AVDO2 and LER. As compaired with control state CSF decreased in VA1 and VA2, but increased in EA during angina. (percent increase in CSF (%) ; EA : VA1 : VA2=45.8±36.1 (mean SD) : 12.3±12.0: -6.8±22.3). LER was markedly reduced in VA1, in which six pts revealed lactate production. In VA2, LER was slightly decreased almost as same as in EA. (LER (%) ; EA : VA1 : VA2=13.8±15.8: -24.7±48.2: 17.3±23.4). We conclude that myocardial ischemia during angina of VA1 (Vari-ant Angina) is severer than that of EA (Effort Angina) and VA2 (Vasospastic Angina who shows ST depression at anginal attack).


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

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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