Abstract
Objective To explore the prognostic significance of T wave direction in lead aVR in patients with acute ST-segment elevation myocardial infarction (ASTEMI). Methods A total of 322 patiens with ASTEMI was examined. The patients were classified into 2 groups (T-wave positive, and T-wave non-positive) base on the direction of T wave in lead aVR. This study was ought to determine the association of T wave direction in lead aVR with the incidence rate of major adverse cardiac events (MACE) after discharge 2 years. Results After discharge 2 years, T-wave positivity patients had higher incidence of MACE than T-wave non-positive patients (P<0.05). Multivariate Cox proportional hazards regression analyses showed that age, and upright T wave in lead aVR were significantly associated with the primary end point. Conclusions T wave direction in lead aVR is a powerful prognostic marker for long-term prognosis. Key words: Electrocardiography; Myocardial infarction; Prognosis
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