Staged Double Switch Repair of Complex Atrioventricular Canal Defect With Dextrocardia and Double Outlet Left Atrium.

Kenny, Matthew D; Mehdi, Mohammad Q; Juarez, Caroline Magalhaes; Laird, Penn; Ullah, Sana; Lemler, Matthew; Jaquiss, Robert D B; Davies, Ryan R et al. · Ann Thorac Surg · 2026

case_report · Level V

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Abstract

We present a case of a staged "double switch" complex biventricular repair in a newborn with heterotaxy, dextrocardia [S, L, L], double outlet right ventricle, double outlet left atrium with right-dominant unbalanced complete atrioventricular canal, L-transposition of the great arteries, and aortic arch hypoplasia. A staged double switch approach allowed safe biventricular correction of a rare complex cardiac defect without residual lesions before 1 year of age.