Objective To observe the efficacy of anti-atrial fibrillation pacemaker in the treatment of paroxysmal atrial fibrillation(PAf), to investigate methodology of Af preventive pacing.

• 目的：观察抗房颤起搏器(anti-atrial fibrillation pacemaker AAfP)治疗阵发房颤(Paroxysmal Atrial fibrillation PAf)的疗效，探讨抗Af起搏的方法学。