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Acetylcholine-induced Coronary Microvascular Vasospasm in a Patient with Angina Pectoris and Normal Coronary Angiogram:A case report Norikazu Maeda 1 , Hisatoyo Hiraoka 1 , Tadashi Nakamura 1 , Fumihiko Matsuura 1 , Noriyuki Ouchi 1 , Atsuyuki Nakata 1 , Tsutomu Nakagawa 1 , Hitoshi Kobayashi 1 , Tohru Funahashi 1 , Shizuva Yamashita 1 , Kaoru Takemura 1 , Yuji Matsuzawa 1 1Second Department of Internal Medicine, Osaka University Medical School Keyword: 冠攣縮 , 冠微小循環 , シンドロームX , coronary vasospasm , coronary microcirculation , syndrome X pp.613-617
Published Date 1997/6/15
DOI https://doi.org/10.11477/mf.1404901502
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The patient was a 59-year-old woman who had an-gina like chest pain at rest. The results from her exer-cise electrocardiogram (ECG) and thallium scintigram were negative. Ambulatory monitoring of ECG showed episodes of ST segment depression with symptoms. Coronary arteriography revealed normal right and left coronary arteries. A continuous intracoronary infusion of acetylcholine at a dose of 5 μg per minute induced marked decrease of coronary blood flow estimated by the use of intracoronary doppler flow wire without significant epicardial coronary narrowing. These findings suggest that this case may be able to be called a patient with "microvascular vasospastic angina.


Copyright © 1997, Igaku-Shoin Ltd. All rights reserved.

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