NPPB and atrial fibrillation: Cardiac parameters were markedly different in AF patients compared to patients in sinus rhythm, both in terms of electrocardiographic and echocardiographic measurements (Tables 3 and 4): they had significantly longer QRS duration at admission ECG (86.5 vs 80.0, p = 0.04), more frequently had impaired LVEF (<45%) (p<0.01), higher cardiac troponin I and NT pro-BNP peaks (9±32 vs 2±6, p<0.01 for troponin peak; 9433 vs 2536, p = 0.01 for NT pro BNP).