A dual-loop bi-atrial macro-reentry flutter during atrial fibrillation ablation

摘要

Dual-loop macro-reentry atrial flutter (AFL) is an atypical AFL, which has two loops of the reentry circuit usually localized within single atrium. In this case report, we present a double-loop bi-atrial flutter during atrial fibrillation ablation, in which the two reentry circuit loops were located around the inferior vena cava and the mitral annulus, respectively.