Myocardial bridges in man: Clinical correlations and angiographic accentuation with nitroglycerin
作者:
Tetsuo Ishimori,
Albert E. Raizner,
Robert A. Chahine,
Mahir Awdeh,
Robert J. Luchi,
期刊:
Catheterization and Cardiovascular Diagnosis
(WILEY Available online 1977)
卷期:
Volume 3,
issue 1
页码: 59-65
ISSN:0098-6569
年代: 1977
DOI:10.1002/ccd.1810030107
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: myocardial bridges;systolic coronary artery narrowing;nitroglycerin;coronary arteriography;coronary artery disease
数据来源: WILEY
摘要:
AbstractLittle is known of the clinical significance of myocardial bridges, which may be recognized angiographically as systolic coronary artery narrowing (SCAN). A retrospective review of a 1 year's experience (313 consecutive coronary arteriograms) revealed 5 patients with SCAN, an incidence of 1.6%. SCAN involved the proximal and/or middle segments of the left anterior descending coronary artery in all patients. It is of particular note that the administration of nitroglycerin noticeably accentuated the SCAN phenomenon in each of 3 patients to whom it was administered.Four of the 5 patients had left ventricular hypertrophy due to hypertrophic car‐diomyopathy (2), aortic stenosis (1), and hypertension (1). All 5 patients with the SCAN phenomenon had anginal chest pains, and critical obstructive coronary atherosclerosis was observed in only 2 cases. The other 3 patients showed, otherwise, normal coronary arteriograms.Thus, myocardial bridges appear to be angiographically manifest predominantly in patients with cardiac hypertrophy. Nitroglycerin, which accentuates SCAN, might be useful as a provocative test to enhance the angiographic recognition of this phenomenon. The possible role of myocardial bridges in the production of myocardial ischemia warrants further investigatio
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