Results: Electromechanical delay time was longer in left atrium. Atrialcontractiontime and PR interval were longer in right side.
结果：左心房的电-机械延迟时间较长，右侧的心房收缩时间和心室的电-机械延迟时间较长。
2
During atrial fibrillation, uncoordinated electrical activity leads to ineffective atrialcontraction, reduced atrial filling time, and decreasing cardiac output.