Does recovery of mitral isthmus conduction lead to macro-reentrant tachycardia after left atrial linear ablation for atrial fibrillation?
Recovery of mitral isthmus conduction after left atrial linear ablation for atrial fibrillation is a common occurrence that can lead to the development of macro-reentrant left atrial tachycardia.
Despite using bidirectional conduction block as a procedural end point, recovery of MI conduction is common and may lead to LAT after left atrial linear ablation for AF. The reason for greater recovery of MI versus CTI conduction is unknown but could be due to differences in isthmus anatomy or lower power used for ablation in the left versus right atrium.
Sawhney et al. (Sat,) studied this question.
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