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Radiology, Vol 119, 521-527, Copyright © 1976 by Radiological Society of North America

ARTICLES

Spontaneously and pharmacologically provoked coronary arterial spasm in Prinzmetal variant angina

CB Higgins, L Wexler, JF Silverman, WG Hayden, WL Anderson and JH Schroeder

Eleven of 21 consecutive patients with Prinzmetal angina (PMA) exhibited no significant fixed stenoses of the coronary arteries. Spontaneous coronary arterial spasm was demonstrated in 3 patients. Ergonovine maleate produced near-total occlusion of a major vessel in 3 of 4 other patients with PMA, but did not provoke spasm in 10 without PMA. The current study documents spasm as the mechanism of myocardial ischemia in some patients with normal coronary arteries and provides initial and favorable diagnostic results with provocative pharmacoangiography in this entity.




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