Fig. 5From: Aortic valve replacement in a 41-year-old woman with uncorrected tetralogy of Fallot, pulmonary atresia, and major aortopulmonary collateral arteries: a case reportTransesophageal echocardiography revealed the MAPCA (arrow) originating from the descending aorta. The inflated intra-aortic balloon catheter (arrowhead) blocked the pulmonary blood flow through the MAPCA. Ao, aortaBack to article page