# Redo TAVI: Improved Hemodynamics With a Supra-Annular Valve in a Small Annulus

## TL;DR

This paper discusses a redo TAVI procedure using a special valve design to improve heart function in patients with a small aortic annulus.

## Contribution

The paper introduces the use of the Allegra THV for redo TAVI in small annuli, emphasizing its design benefits and planning tools.

## Key findings

- The Allegra THV's design improves hemodynamics in small annuli by increasing effective orifice areas.
- Meticulous CT analysis is crucial for successful redo TAVI procedures.
- The Redo TAVI app aids in procedural planning and hemodynamic success.

## Abstract

Expanding transcatheter aortic valve implantation (TAVI) indications to include severe aortic stenosis patients at a younger age, combined with increasing patient survival, have led to a rise in Redo TAVI procedures. In them, patients with a small native annulus pose a unique challenge.

We describe such a patient who presented with early transcatheter heart valve (THV) failure and underwent redo TAVI with an Allegra THV, with an emphasis on redo TAVI planning concepts & process.

The Allegra THV's distinctive design allows for higher effective orifice areas in small annuli while commissural post movement owing to a flexible outflow reduce leaflet stress.

Redo TAVI procedures require meticulous CT analysis for procedural and hemodynamic success. The Redo TAVI app by Dr Bapat is an essential aid, and the Allegra THV a useful consideration in redo TAVI procedures with small annuli.