THE SIGNIFICANCE OF Q WAVE ON ELECTROCARDIOGRAM AT THE PRESENTATION OF ANTERIOR WALL ST SEGMENT ELEVATION MYOCARDIAL INFARCTION FOR PATIENTS UNDERGOING PRIMARY PERCUTANEOUS INTERVENTION

Abstract

Background and Hypothesis:The presence of initial Q waves in the presenting ECG of ST segment
elevation myocardial infarction (STEMI) patients was associated with adverse prognostic outcomes
compared to those without Q waves regardless of the reperfusion method. Those adverse findings can be
due to a number of other associated high risk variables related to poor clinical class upon presentation
and/or inadequate revascularization outcome (TIMI flow less than III or inadequate ST segment
resolution). Whether a similar adverse impact is going to be found in relatively lower risk STEMI
patients with initial Q waves on their presenting ECG is questionable.