What question did this study set out to answer?

This research aims to evaluate the impact of the intercaval bundle connection on ablation procedures during multisite pacing.

January 10, 2026JACC Advances0 citationsOpen Access

Evaluation of Intercaval Bundle Connection by Multisite Pacing and Right-Sided Pulmonary Vein Isolation

MKManabu Kashiwagi AKAkio Kuroi DMDaichi Miyake

Key Result

Multisite pacing visualized the intercaval bundle connection in all cases, and an LA attachment site affected additional ablation frequency for the right anterior PV carina.

Key Points

This research aims to evaluate the impact of the intercaval bundle connection on ablation procedures during multisite pacing.
Used multisite pacing to visualize the intercaval bundle connection.
Identified attachment sites on the left atrium.
Monitored frequency of additional ablation for the right anterior pulmonary vein carina.
The intercaval bundle connection was successfully visualized in all cases.
Attachment site on the left atrium significantly influenced the need for additional ablation.

Structured PICO

Population

Patients undergoing right-sided pulmonary vein isolation

Intervention

Multisite pacing

Outcome

Visualization of Intercaval Bundle Connection (IBC) and frequency of additional ablation for the right anterior PV carina

Multisite pacing effectively visualizes the intercaval bundle connection, whose left atrial attachment site impacts the need for additional ablation during right-sided pulmonary vein isolation.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

The IBC was visualized in all cases by multisite pacing. An attachment site on the LA side influenced the frequency of additional ablation for the right anterior PV carina.

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