ST-alternans alternans

Kenneth M. Kessler, E. Joseph Bauerlein, Alan H Schob, Eduardo de Marchena, Robert J. Myerburg

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


ST-segment alternans indicates nonuniformity of ventricular repolarization in time and space, and consequently correlates with the occurrence of ventricular fibrillation during cardiac ischemia.1,2 ST alternans has been observed during spontaneous and induced myocardial ischemia in experimental animals1,3 and in man during exercise,4 Prinzmetal angina5,6 and coronary angioplasty.7-9 Whereas ST-segment shifts (particularly ST-segment elevation) are frequent during angioplasty,10 ST-segment alternans is infrequent. We present a patient who on sequential balloon inflations during coronary angioplasty demonstrated a sequence of ST-segment shifts recorded by intracoronary electrocardiography, reflecting the unique effects of repeated short episodes of ischemia on the alternans phenomenon.

Original languageEnglish (US)
Pages (from-to)1224-1225
Number of pages2
JournalThe American Journal of Cardiology
Issue number13
StatePublished - Nov 1 1992

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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