Journal
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
Volume 37, Issue 8, Pages 2042-2049Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S0735-1097(01)01300-6
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Objectives This randomized trial compared a strategy of predischarge coronary angiography (CA) with exercise treadmill testing (ETT) in low-risk patients in the chest pain unit (CPU) to reduce repeat emergency department (ED) visits and to identify additional coronary artery disease (CAD). Background Patients with chest pain and normal electrocardiograms (ECGs) have a low likelihood of CAD and a favorable prognosis, but they often seek repeat evaluations in EDs. Remaining uncertainty regarding their symptoms and diagnosis may cause much of this recidivism. Methods A total of 248 patients with no ischemic ECG changes triaged to a CPU were randomized to CA (n = 123) or ETT (n = 125). All patients had a probability of myocardial infarction less than or equal to7% according to the Goldman algorithm, no biochemical evidence of infarction, the ability to exercise and no previous documented CAD. Patients were followed up for greater than or equal to1 year and surveyed regarding their chest pain self-perception and utility of the index evaluation. Results Coronary angiography showed disease (greater than or equal to 50% stenosis) in 19% and ETT was positive in 7% of the patients (p = 0.01). During follow-up (374 +/- 61 days), patients with a negative CA had fewer returns to the ED (10% vs. 30%, p = 0.0008) and hospital admissions (3% vs 16% p = 0.003), compared with patients with a negative/nondiagnostic ETT. The was more likely to consider their pain as cardiac-related (15% vs. 7%), to be unsure about its etiology (38% vs. 26%) and to judge their evaluation as not useful (39% vs. 15%) (p < 0.01 for all comparisons). Conclusions In low-risk patients in the CPU, a strategy of CA detects more CAD than ETT, reduces long-term ED and hospital utilization and yields better patient satisfaction and understanding (C) College of Cardiology.
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