Changing Epidemiology of Hypoplastic Left Heart Syndrome: Results of a National Swedish Cohort Study

摘要

BackgroundNorwood surgery provides a palliative surgical option for hypoplastic left heart syndrome and has been available in Sweden since 1993. The practice of prenatal ultrasound screening was gradually implemented in the same era, resulting in an increased prenatal detection rate. Our primary aims were to study changes in the incidence of live births, prenatal detection rate, and the termination of pregnancies over time. The secondary aims were to study the proportion of live‐borns undergoing surgery and to identify factors that influenced whether surgery was or was not performed.