Origin of the main pulmonary artery from the left coronary artery in complex pulmonary atresia

describe a 22-year-old woman with a history of unrepaired pulmonary atresia with ventricular septal defect. This woman was interesting in that her mai n pulmonary artery and right pulmonary artery arose from the left main coro nary artery. She developed significant pulmonary hypertension in addition t o isolation of the left pulmonary artery following ductal closure, subseque nt to which the majority of her pulmonary blood flow was coronary dependent .