The Comparison Between the PVAM and CPVI for the Patients of PAF

The Comparison Between the Pulmonary Vein Antrum Modification by SmartTouch Ablation Catheter With Contact Force Monitoring and Circumferential Pulmonary Vein Isolation by That Without Contact Force Monitoring Plus Lasso Catheter for the Patients of Paroxysmal Atrial Fibrillation: a Randomized Controlled Trial

To compare the efficacy and safety of circumferential pulmonary vein isolation without contact force with the pulmonary vein antrum modification for patients of paroxysmal atrial fibrillation.

This is a single centre, prospective control study. The study will enroll 180 patients with 2:1 grouped.

Inclusion Criteria:

• patients with paroxysmal atrial fibrillation refractory to drugs
• with consent

Exclusion Criteria:

• LVEF<50%
• history of cardiac surgery
• valvular heart disease
• abnormal thyroid function
• left atrial thrombus