Post-Mustard Procedure Pulmonary Venous Obstruction: An Opportunity for Anatomic Correction with a One-Stage Arterial Switch

A 14-year-old boy after a Mustard procedure for transposition of the great arteries developed pulmonary hypertension secondary to baffle obstruction. This occurred over several years without apparent significant symptomatology. Systemic-level pressure prevailed in the left (pulmonary) ventricle and provided an opportunity to perform a successful one-stage arterial...