Study of changes in P wave dispersion and duration as predictors of AF in patients with primary dilated cardiomyopathy

ABSTRACT

Background: P wave duration on signal averaging ECG [PD SAECG] and P wave dispersion [PWD] on standard ECG are non invasive markers of intra-atrial conduction time disturbances, the major electrophysiological cause of atrial fibrillation [AF]. P wave abnormalities have been previously studied in some cardiac conditions, however little data are available in patients with primary dilated cardiomyopathy [DCM]