Neonatal cardiology addresses heart issues in unborn babies and pregnant women at risk. Conditions range from diaphragmatic hernia to cardiomyopathy. Neonatal and pediatric cardiologists collaborate for comprehensive care. Annually, 40,000 U.S. babies are born with congenital heart disease; some may need pre-birth surgery. Premature newborns, especially, face higher mortality rates after heart surgery. Neonatologists often identify cardiac issues first, leading to stabilization and cardiac consultations.