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Following reperfusion therapy, early T wave inversions (TWI) have been shown to be a marker of successful reperfusion. We aimed to evaluate the relationship of TWI on the presenting ECG with spontaneous reperfusion as assessed by coronary angiography in patients with ST elevation (STE) myocardial infarction (STEMI).

Data of 146 consecutive patients presenting to the St. Luke's Episcopal Hospital Emergency Department with acute STEMI undergoing primary percutaneous coronary intervention (p-PCI) between January, 2007 and October, 2010 were retrospectively analyzed. Clinical data, ECG and angiographic data were reviewed. Patients were dichotomized based on T wave morphology on the presenting ECG into 2 groups – those with TWI and those with positive T waves (PTW).

Thirty-one patients (21.2%) had TWI, while 115 (78.8%) had PTW. Sixty-four (43.8%) patients had …