Reconnection and no ablation Reconnection and ablation No reconnection
147 (28) 137 (26) 117
— — —
147 (100) 137 (100) 117 (100)
20
12–18
2085
— — 0
12
42.3% 69.4% 55.7%
<0.001 0.019
110
88% 48% 55%
Veins considered and tested per pair; no further ablation in case of dormant conduction; historical cohort as comparator; out of 250 patients without dormant conduction 117 were randomized to intense follow-up registry. #This study specified the freedom from any atrial tachycardia as the primary endpoint. DC+: veins with dormant conduction at first procedure; DC−: veins without dormant conduction at first procedure; pAF: paroxysmal atrial fibrillation.