Aims

Circumferential pulmonic varicosity separation (CPVI) is an ingrained strategy for atrial arrhythmia (AF) ablation. Superior vena cava (SVC), by harbouring the eld of non-pulmonary varicosity (PV) foci, is the most ordinary non-PV lineage for AF. However, it is uncharted whether CPVI compounded with SVC separation (SVCI) could meliorate clinical results and whether SVCI is technically innocuous and feasible.

Methods and results

A amount of 106 cases (58 males, cipher geezerhood 66.0 ± 8.8 years) with paroxysmal AF were included for ablation. They were allocated arbitrarily to digit groups: CPVI assemble (n = 54) and CPVI + SVCI assemble (n = 52). All cases underwent the machine successfully. Pulmonary varicosity separation was achieved in every cases. The procedural instance and fluoroscopic instance were same between the digit groups. The stingy operation instance for SVC was 7.8 ± 2.7 min. Superior vena cava separation was obtained in 50/52 cases. In the remaining digit cases, SVCI was not achieved because of preventative diaphragmatic cheek injury. During a stingy follow-up of 4 ± 2 months, 12 (22.2%) cases in the CPVI assemble and 10 (19.2%) cases in the CPVI + SVCI assemble had atrial tachyarrhythmias (ATa) repetition (P = 0.70). Nine of 12 cases in the CPVI assemble and 8/10 cases in the CPVI + SVCI assemble underwent reablation (P = 0.86), and PV reconnection occurred in 7/9 cases in the CPVI assemble and in 8/8 cases in the CPVI + SVCI group. All PV reconnection was reisolated by gaps ablation. There was no SVC reconnection in the CPVI + SVCI group. In digit cases without PV reconnection from the CPVI group, SVC-originated brief separate of atrial tachycardia was identified and eliminated by the SVCI. At the modify of 12 months of follow-up, 50 cases (92.6%) in the CPVI assemble and 49 (94.2%) in the CPVI + SVC assemble were liberated of ATa repetition (P = 0.73).

Conclusion

In our program of paroxysmal AF patients, empirically adding SVCI to CPVI did not significantly turn the AF repetition after ablation. Superior vena cava separation haw be useful, however, in designated patients in whom the SVC is identified as a causing for AF. However, because of the origin concept of the think and its relatively diminutive distribution size, the effect of SVCI on clinical results should be evaluated in a super program of patients.

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