Association between TP-E/QT ratio and prognosis in patients undergoing primary percutaneous coronary intervention for ST-segment elevation myocardial infarction Full Text
Clinical Cardiology, 07/05/2012
Zhao X et al. – The Tp–e/QT ratio may serve as a prognostic predictor of adverse outcomes after successful pPCI treatment in STEMI patients.Methods
- A total of 338 patients (N = 338) with STEMI treated by pPCI were included.
- The Tp–e and Tp–e/QT ratio were determined using electrocardiograms in the subjects exhibiting ST–segment elevation.
- The Tp–e/QT ratio was correlated with both short– and long–term outcomes.
- Analysis of the receiver operating characteristic curve demonstrated that the optimal cutoff value for outcome prediction was a Tp–e/QT ratio of 0.29.
- Of the 388 patients enrolled, 115 (34.0%) exhibited a Tp–e/QT ratio ≥0.29.
- Patients with a Tp–e/QT ratio ≥0.29 showed elevated rates of both in–hospital death (21.9% vs 2.3%; P < 0.001) and main adverse cardiac events (MACE) (48.1% vs 15.3%; P < 0.005).
- After discharge, Tp–e/QT ratios ≥0.29 remained an independent predictor of all–cause death (35.5% vs 5.2%, P < 0.001) and cardiac death (32.3% vs 2.6%, P < 0.001).