Aortopulmonary collateral artery embolization during postoperative extracorporeal membrane oxygenation after arterial switch procedure

Aortopulmonary collateral arteries sometimes complicate cyanotic congential heart defects. Combined with a relevant left-right shunt, this could resul t in massive airway bleeding during and after corrective surgery. A preoper atively diagnosed 1.2 mm small aortopulmonary collateral artery in a newbor n suffering from transposition of the great arteries caused life-threatenin g airway bleeding during surgery. Postoperative extracorporeal membrane oxy genation (ECMO) was necessary, and coil embolization was performed on ECMO to terminate pulmonary bleeding.