Clinical Assessment of Perfusion Techniques During Repair of Coarctation With Aortic Arch Hypoplasia in Infants

Inclusion Criteria: * coarctation with severe aortic arch hypoplasia (distal aortic arch z-score \< -2) * coarctation of aorta with septal defects Exclusion Criteria: * coarctation with mild aortic arch hypoplasia (distal aortic arch z-score \> -2) * complex congenital heart diseases including aortic arch hypoplasia (e.g. transposition of great arteries, double oulet right ventricle, atrioventricular septal defect, Shone's complex) * univentricular and duct-dependent heart defects * aortic valve and/or mitral valve stenosis/hypoplasia (aortic valve or mitral valve z-score \< -2.0) * left ventricular dysfunction (left ventricle ejection fraction \< 60%) * congenital renal or central nervous system anomalies * related infectious diseases * prematurity (gestational age \< 37 weeks)