Electrophysiologic Study and Ergonovine Provocation of Coronary Spasm in Unexplained Syncope.
نویسندگان
چکیده
منابع مشابه
Possible role of coronary artery spasm in unexplained syncope.
Coronary spasm provocation by intracoronary methylergonovine was performed in 14 patients (8 men and 6 women, mean age 56 +/- 6 years) with syncope that remained unexplained despite neurologic and noninvasive cardiac evaluations. Electrophysiologic testing was also performed in 6 of 14 patients. No patient had structural heart disease or significant fixed stenosis of greater than or equal to 75...
متن کاملDifferential Incidence and Morphology of Spasm According to Coronary Arterial Location by Intracoronary Ergonovine Spasm Provocation Testing.
BACKGROUND We reported less provoked spasm in the left circumflex artery (LCX) by acetylcholine testing compared with the left anterior descending artery (LAD) and right coronary artery (RCA), so we investigated the clinical characteristics of provoked spasm in the LCX by ergonovine (ER) testing.Methods and Results:We retrospectively analyzed 1,185 consecutive cases of intracoronary ER testing ...
متن کاملReduction of coronary blood flow during coronary artery spasm occurring spontaneously and after provocation by ergonovine maleate.
A 50-year-old man suffering from recurrent chest pain accompanied by transient ST-segment elevation developed spasm of the left anterior descending coronary artery after receiving ergonovine maleate. During spontaneous chest pain, thermodilution coronary sinus blood flow fell from 96 ml/min to 46 ml/min, while the coronary sinsu arteriovenous oxygen difference widened from 9.82 volumes percent ...
متن کاملCASE REPORTS Reduction of Coronary Blood Flow during Coronary Artery Spasm Occurring Spontaneously and after Provocation by Ergonovine Maleate
A 50-year-old man suffering from recurrent chest pain accompanied by transient ST-segment elevation developed spasm of the left anterior descending coronary artery after receiving ergonovine maleate. During spontaneous chest pain, thermodilution coronary sinus blood flow fell from 96 ml/min to 46 ml/min, while the coronary sinus arteriovenous oxygen difference widened from 9.82 volumes percent ...
متن کاملSequential Coronary Spasm in Prinzmetal’s Angina Presenting as Syncope
Prinzmetal or variant angina, described for the first time half a century ago,1 is a rare cause of myocardial ischemia. The pathophysiological basis of this condition is reversible coronary spasm that usually appears at rest and, therefore, presentation as multivessel coronary spasm is rare. We describe a 56-year-old woman recently diagnosed with hypertension. Chlorthalidone therapy was started...
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ژورنال
عنوان ژورنال: Japanese Heart Journal
سال: 1993
ISSN: 0021-4868,1348-673X
DOI: 10.1536/ihj.34.171