Arrhythmias & electrophysiology

Visualization and mapping of the right phrenic nerve by intracardiac echocardiography during atrial fibrillation ablation

EuropacePublished Feasibility study

Authors' conclusion

RPN can be visualized by ICE in most patients, thus providing a novel approach for the real-time detection of RPN during AF ablation.

Study context

Population
Patients undergoing atrial fibrillation (AF) ablation
Participants
38 patients
Outcome
Feasibility of real-time visualization and mapping of the right phrenic nerve (RPN) by intracardiac echocardiography (ICE)

Main finding

As reported in the abstract

Right phrenic nerve (RPN) visualized by intracardiac echocardiography (ICE)

92%

Minimum distance of RPN from superior vena cava (SVC) (mm)

1.0 ± 0.4

Minimum distance of RPN from right superior pulmonary vein (mm)

14.1 ± 7.3

Correlation of RPN capture threshold with distance from SVC (Spearman's coefficient)

0.728, < 0.001

Safety

RPN injury with ICE-guided SVC isolation

Patients with RPN injury
0

Original publication

Visualization and mapping of the right phrenic nerve by intracardiac echocardiography during atrial fibrillation ablation. Europace. Published 1 March 2023. doi:10.1093/europace/euad012

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