Echocardiographic assessment of wall motion in ST-segment alternans during coronary angioplasty.
ST alternans occurs in the setting of severe and extensive myocardial ischemia. In this particular case, ST alternans occurred well after the onset of ischemia-induced left ventricular dysfunction. There is no echocardiographic evidence of beat-to-beat variation in contractility to correspond to this ST-segment phenomenon. Further studies of left ventricular function during ST alternans in patients are needed to determine whether this finding applies to all patients with ischemic heart disease.
Kerensky
R A
RA
Department of Internal Medicine, University of Florida Health Science Center, Gainesville 32610-0277, USA.
Lewis
J F
JF
Azar
G J
GJ
Franco
E A
EA
Hill
J A
JA
D015906:Angioplasty, Balloon, Coronary; D004452:Echocardiography; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000000981:diagnostic imaging / Q000503:physiopathology*; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging*