TY - JOUR
T1 - ST-alternans alternans
AU - Kessler, Kenneth M.
AU - Bauerlein, E. Joseph
AU - Schob, Alan H
AU - de Marchena, Eduardo
AU - Myerburg, Robert J.
PY - 1992/11/1
Y1 - 1992/11/1
N2 - 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.
AB - 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.
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U2 - 10.1016/0002-9149(92)90065-7
DO - 10.1016/0002-9149(92)90065-7
M3 - Article
C2 - 1414955
AN - SCOPUS:0026485774
VL - 70
SP - 1224
EP - 1225
JO - American Journal of Cardiology
JF - American Journal of Cardiology
SN - 0002-9149
IS - 13
ER -