# Transient RBBB and Temporary LBBB Following Transcatheter Aortic Valve Replacement

## TL;DR

A patient developed temporary heart conduction issues after a heart valve procedure, highlighting the need for careful monitoring and extended pacemaker use.

## Contribution

This case report highlights the rare sequence of transient RBBB followed by LBBB after TAVR and suggests extended monitoring and pacemaker use.

## Key findings

- An 82-year-old patient developed transient RBBB followed by persistent LBBB after TAVR.
- Both conduction abnormalities resolved within a month.
- New-onset RBBB may predict subsequent LBBB, requiring extended monitoring.

## Abstract

Post-transcatheter aortic valve replacement (TAVR) conduction disturbances typically manifest as left bundle branch block (LBBB). Sequential right bundle branch block (RBBB) followed by LBBB is extremely rare.

An 82-year-old female developed transient RBBB 1 hour after TAVR, followed by persistent LBBB 1 day later. Both conduction abnormalities resolved at the 1-month follow-up.

New-onset RBBB may herald subsequent LBBB, warranting extended monitoring periods.

RBBB is uncommon after TAVR, but it should not be underestimated. In patients with RBBB following the procedure, prolonging the duration of temporary pacemaker implantation may be a prudent and clinically reasonable strategy.