P-366: Impaired atrial function after conversion of atrial fibrillation in hypertensive patients

The aim of the study was to evaluate the Left Atrial (LA) contribution to left ventricular (LV) filling after conversion of atrial fibrillation in patients (pts) with hypertension. We selected 90 pts with hypertension and mild LV hypertrophy. Pts were hospitalized because of an episode of atrial fibrillation and were successfully cardioverted by external DC shock. Pts population included 69 men and 21 women with a mean age of 55 ± 6 years (group A). Control group included 90 pts cardioverted because of Lone atrial fibrillation without cardiac hypertrophy (mean age 56 ± 10 yrs)(Group B). Atrial function and size were assessed by Doppler echocardiography and the following parameters were measured: transmitral peak A velocity, atrial filling fraction, atrial ejection force (AEF), peak E velocity,deceleration time (dec t)and Isolumic relaxation time (IVRT), LA maximal and minimal volume, LV cardiac mass index (LVMI), pulmonary venous diastolic and systolic flows and reversal A wave. All pts had an increased LVMI (277 ± 48 vs group B 114 ± 38 g/m2;p