Predictive Value of Left Atrial Volume Measured by Multi-Detector Computed Tomography or Cardiac Magnetic Resonance Imaging In the Treatment of Paroxysmal Atrial Fibrillation

Background: We investigate the role of left atrial volume (LAV), measured by MDCT or cardiac MRI, as a predictor of outcome following pulmonary vein isolation (PVI) in patients with paroxysmal atrial fibrillation (AF). Methods: PVI was performed in 213 patients (80 females, age 60±10 years) with paroxysmal AF. LAV was assessed by MDCT (n=39) or cardiac MRI (n=174) prior to ablation. LA-diameter (LAD) and LA-area were determined by echocardiography. Results: The mean LAV was 85±28ml (range 22–189ml). The mean LAD and the mean LA-area were 42±6mm and 23±6cm2. After a follow-up period of 18±5 months AF-recurrence w…