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Coronary no-reflow (NR) following primary percutaneous coronary intervention (pPCI) is associated with worsened prognosis in patients with ST segment elevation myocardial infarction (STEMI). Despite rapid developments in cardiovascular area; there are limited data regarding prediction of NR before pPCI. P wave duration and dispersion (PWD, PW_DIS, respectively) have been studied in STEMI patients and found to be associated with reperfusion success; however none of them has been found to predict NR before PCI. In our study we aimed to evaluate whether PWD, PW_DIS and a novel parameter P wave peak time (PWPT) could predict NR development in STEMI patients.

Fifty six patients who were admitted with anterior STEMI constituted study populations. The diagnosis and treatment of STEMI was made on the basis of current guidelines. P wave parameters including PWD, PW_DIS and …