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Late recovery of sinus rhythm following perioperative complete atrioventricular block in a child with congenitally corrected transposition

We report a patient with l-transposition of the great arteries who developed perioperative complete atrioventricular block at 5 years of age in conjunction with a modified double-switch operation, but had unexpected late recovery of normal sinus rhythm months later. This case highlights that even for patients with l-transposition, which is particularly vulnerable to developing both spontaneous and perioperative complete atrioventricular block, late recovery of atrioventricular node conduction may still be possible after surgery.