# Double Transition in Left Bundle Branch Area Pacing

## TL;DR

This paper explores a rare double transition sign in heart pacing and examines the success factors for left bundle capture.

## Contribution

It provides new insights into the electrophysiologic parameters associated with successful left bundle branch pacing.

## Key findings

- The double transition sign was observed during bipolar threshold testing.
- Electrophysiologic parameters were analyzed to determine successful left bundle capture.

## Abstract

This case discusses the differential diagnosis of the double transition sign during bipolar threshold testing following conduction system pacing and delves into the details of electrophysiologic parameters of successful left bundle capture.