Background. It is suggested that P-wave terminal force (Ptf), a product of the amplitude (PAM) and the duration (PT) of the terminal phase of P-wave in lead V1, shows early delay in left atrial conduction, observed earlier that the dilatation of left atrium.~Aim. We aim to follow PT, PAM and Ptf changes during 5-year follow-up (5FU) and examine the relation of these changes to the number of AF episodes requiring hospitalisation (HOSP) for restoration of sinus rhythm (RSR).~We hypothesise that, in patients with atrial fibrillation (AF):~the index parameters (PT, PAM, Ptf), characterising left atrial repolarization, correlates the number of future hospitalisations (HOSP) aimed for restoration of sinus rhythm (RSR) in 5-year follow-up (5FU)~in 5FU the number of HOSP aimed for RSR correlates with the progression of left atrium electrical remodelling, expressed as PAM5,PT5, Ptf5 at 5FU.
It is suggested that P-wave terminal force (Ptf), a product of the amplitude (PAM) and the duration (PT) of the terminal phase of P-wave in lead V1, shows early delay in left atrial conduction, observed earlier that the dilatation of left atrium.~The aim is to follow PT, PAM and Ptf changes during 5-year follow-up (5FU) and examine the relation of these changes to the number of AF episodes requiring hospitalisation (HOSP) for restoration of sinus rhythm (RSR).