# Percutaneous Management of Right Ventricular Outflow Tract Obstruction in an Adult Patient After Atrial Switch: A Case for Targeted Infundibular Ablation

## TL;DR

A patient with heart defects had a successful non-surgical treatment for a blocked heart pathway using alcohol ablation.

## Contribution

Demonstrates targeted infundibular ablation as a novel interventional approach for RVOTO in post-atrial switch patients.

## Key findings

- Alcohol ablation of the conus branch of the RCA reduced pressure gradient in a high-risk patient.
- Interventional approach avoided surgery in a patient with transposition of the great arteries.
- Case highlights feasibility of percutaneous management for RVOTO resembling subaortic stenosis.

## Abstract

Alcohol septal ablation is a well‐established treatment method for patients with hypertrophic cardiomyopathy. We present a case report of a patient with transposition of the great arteries (TGA) after a Mustard procedure, who developed significant right ventricular outflow tract obstruction (RVOTO), functionally resembling subaortic stenosis. Given the high surgical risk, interventional alcohol ablation of the conus branch of the right coronary artery (RCA) was successfully performed, resulting in a significant decrease in the pressure gradient.