Methods
All patients with STEMI that were treated with PCI from January 2003 through May 2010 at our institute were included in the study. We collected demographic, clinical, electrocardiographic, and procedural characteristics in these patients. Resolution of RSTD was compared between the ECGs prior to and after PCI and patients were stratified into two groups. Group 1 consisted of patients with > 50% RSTD resolution, group 2 consisted of < 50% RSTD resolution. Patients with no available ECGs or no RSTD at presentation and patients with failed PCI were excluded from the analysis. Primary endpoint was one-year composite end-point of major adverse cardiac events (MACE), which consisted of all cause mortality, recurrent acute coronary syndrome, and stroke/transient ischemic attack (TIA). Secondary end points were in-hospital ventricular tachycardia (VT), ventricular fibrillation (VFib), cardiogenic shock (CS), and requirement for temporary or permanent pacemakers.
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