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Abstract Objective To study the predictive value of ST segment elevation(STSE) in aVR lead for non-STSE acute myocardial infarction(AMI).Methods The ECG data of 425 patients with non-STSE AMI were retrospectively analyzed, with ST depression in each lead and T-wave inversion observed. All the measured data were sorted out and statistically analyzed. Results STSE in aVR lead was more common in complete right bundle branch block, left ventricular hypertrophy and patients with STSE in V1 lead. And it is also popular in the patients with ST segment depression in other leads while it is rarely seen in the patients with T-wave inversion. In our study, 22 patients died during hospitalization, among whom 5 cases died of cardiogenic shock. The continuous increase of inhospital mortality was related to the ceaseless rise of STSE levels in aVR lead. Multivariate analysis showed that STSE in aVR lead had become an important independent variable for predicting inhospital mortality. STSE in aVR lead was mostly associated with inpatient' sduration of myocardial ischemia and heart failure, but was not related to levels of serum CK or CK-MB.Conclusion If the relationship between STSE in aVR lead and serious coronary artery disease can be verified in a large sample of nonSTSE AMI patients, STSE in aVR lead can serve as a quite useful index in judging which patient is feasible for interventional therapy in an early phase.
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Received: 19 September 2014
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