Prognostic association of electrocardiographic findings with left ventricular ejection fraction in patients with right ventricular pacing pacemakers

Patients with right ventricular (RV) pacing cardiac pacemakers have similar electrocardiographic patterns with patients left bundle branch block (LBBB). While the electrocardiography (ECG) criteria of LBBB in patients with reduced left ventricular ejection fraction (LVEF) have been studied well, it was not clearly elucidated concerning RV pacing cases. Aim: This study's main goal was to define and compare the significance of chosen ECG parameters to predict left ventricular systolic dysfunction in patients with LBBB and RV pacing cardiac pacemakers by thoroughly analyzing 12 leads of ECG.