title: Early detection of myocardial ischemia after successful percutaneous coronary angioplasty.
abstract: We evaluated the functional significance of angiographically successful percutaneous transluminal coronary angioplasty (PTCA) in 50 patients before and after PTCA using an atrial pacing stress test. Before balloon angioplasty, 40/50 patients had transient ST-segment changes on the intracoronary (IC) ECG. After PTCA 14/50 patients continued to have ischemic changes on IC-ECG. Atrial pacing stress tests can be performed easily in the cardiac catheterization laboratory. Despite angiographically successful dilatation, 28% of the patients have inducible ischemia indicating functionally inadequate dilatation. Inadequate functional dilatation may contribute to early return of symptoms in some patients.
authors.affiliation: Department of Medicine, UTHSC-San Antonio 78284, USA.
authors.forename: A
authors.initials: A
authors.lastname: Jain
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015906:Angioplasty, Balloon, Coronary; D016275:Atrial Function; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003327:Coronary Disease / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D017548:Echocardiography, Transesophageal; D004558:Electric Stimulation; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology