Perinatal and perioperative factors associated with mortality and an increased need for hospital care in infants with transposition of the great arteries: A nationwide 11‐year population‐based cohort

Introduction Newborn infants with transposition of the great arteries (d‐TGA) need immediate care for an optimal outcome. This study comprised a nationwide 11‐year population‐based cohort of d‐TGA infants, and assessed whether the implementation of a nationwide systematic fetal screening program, or other perinatal, or perioperative factors, are associated with mortality or an increased need for hospital care. Material and methods The national cohort consisted of all live‐born infants with simple d‐TGA (TGA ± small ventricular septal defect, n = 127) born in Finland during 2004‐2014. Data were collected from six national registries. Prenatal diagnosis and perinatal and perioperative factors associated with mortality and length of hospitalization were evaluated. Results Preoperative mortality was 7.9%, and the total mortality was 8.7%. The prenatal detection rate increased after introducing systematic fetal anomaly screening from 5.0% to 37.7% during the study period (P