Decreased longitudinal systolic strain rate of the left atrial myocardium as one of the earliest markers of atrial cardiomyopathy in subjects with brief paroxysmal atrial fibrillation.

摘要: Purpose Brief paroxysmal atrial fibrillation (BPAF) is defined as episodes of (AF) lasting less than 30 seconds and can be a sign cardiomyopathy. We aimed to evaluate left (LA) function in patients with BPAF. Methods This cross-sectional prospective study consecutively recruited 42 BPAF on 24 48 hour electrocardiography Holter monitoring. selected 50 volunteers the control group after hours Two-dimensional speckle-tracking echocardiography was performed longitudinal deformation variables LA function. Results Strain rate during reservoir phase lower (P = .018) (2.0 ± 0.4 second-1 ) controls (2.2 0.5 ). difference remained significant adjustments for ventricular ejection fraction, maximal volume, diabetes (β 0.222, P .036). reservoir, conduit, contraction phases strain conduit were not significantly different between two groups. Conclusions The evaluated by two-dimensional subjects that without