Peak troponin I level predicts new-onset atrial fibrillation in patients with myocardial infarction.

PURPOSE: We aimed to assess the predictive value of peak troponin I level for the occurrence of new-onset AF in myocardial infarction. METHODS: A total of 1553 patients, who were hospitalized with diagnosis of STEMI and underwent primary PCI, were retrospectively evaluated. New-onset AF was defined as any newly diagnosed AF that occurred during index hospitalization after primary PCI. RESULTS: New-onset AF was observed in 90 patients (5.8% of the study population). Patients who developed AF were older (56.1 vs. 62.6 years, p.