Predictive role of left atrial and ventricular mechanical function in postoperative atrial fibrillation: a two-dimensional speckle-tracking echocardiography study

Abstract

Objective: The aim of this study was to determine the role of leftsided mechanical parameters in postoperative atrial fibrillation (POAF) in patients undergoing coronary artery bypass grafting (CABG). Methods: Ninety patients with coronary artery disease and normal left ventricular (LV) function in sinus rhythm were enrolled in the study. Preoperative LV and left atrial (LA) mechanics were evaluated by two-dimensional (2D) speckle-tracking echocardiography (STE), including strain and rotation parameters, and volume indices. Patients were monitored in order to detect POAF during the postoperative period. Results: Twenty-three of 90 patients (25.6%) developed POAF. Age (p70 pg/ml, OR 22.377, CI 3.286–152.381, p<0.001), PALS (OR 0.86, CI 0.75–0.98, p=0.023), and UntwV (OR 1.02, CI 1.00–1.04, p=0.029) were the independent predictors of POAF. Conclusion: The combination of 2D STE, clinical, and biochemical parameters may help predict POAF.

Keywords

• atrial fibrillation
• coronary artery disease; left atrial strain; left ventricular strain; speckle tracking echocardiography.