Predictors of revascularization among emergency department patients who are evaluated for acute coronary syndrome.

Background: To determine, among patients who present to the emergency department with symptoms suggestive of acute coronary syndrome (ACS), predictors of short-term revascularization.

Methods: A prospective descriptive trial was performed. Potential predictors for revascularization were measured by means of a questionnaire of providers, serum for cardiac biomarkers, and an initial ECG. The primary outcome of revascularization (coronary bypass graft or percutaneous intervention) was determined through a medical record review. Potential predictors of revascularization were entered into a family of logistic regressions.

Results: 341 eligible subjects were enrolled, of whom 14% underwent revascularization. The predictors of revascularization included ST elevation on initial ECG (odds ratio 12.0), and an elevation in troponin I (odds ratio 8.9), CKMB (odds ratio 6.8), or myoglobin (odds ratio 4.7) on admission. When all three biomarkers competed in the same model, troponin I appeared to be the strongest predictor of short-term revascularization.

Conclusion: In a single site study, among emergency department patients with symptoms suggestive of ACS, ST elevation on initial ECG and an elevation in troponin I, CK-MB, and myoglobin upon presentation all predicted short -term revascularization. Among the three biomarkers, elevation in troponin I was the strongest predictor. ABBREVIATED ABSTRACT: We conducted a prospective descriptive trial to identify predictors of short-term revascularization among 341 emergency department patients who presented with symptoms suggestive of ACS. Fourteen percent of the study population received revascularization. Predictors of revascularization included ST elevation on initial ECG (odds ratio 12.0.), and an elevation in troponin I (odds ratio 8.9), CKMB (odds ratio 6.8), or myoglobin (odds ratio 4.7) on admission. When all three biomarkers competed in the same model, troponin I appeared to be the strongest predictor of short-term revascularization.