Key Concepts
Introduction
Neonatal adaptation to extrauterine life encompasses the immediate physiological transitions at birth and the detection and management of congenital anomalies that affect newborn outcomes. Congenital heart defects, occurring in approximately 1% of live births, are classified as acyanotic (left-to-right shunts: VSD, ASD, PDA) or cyanotic (right-to-left shunts: Tetralogy of Fallot, transposition of the great arteries), with the direction of blood flow determined by the pressure differential between cardiac chambers. Neural tube defects (anencephaly, spina bifida) result from failure of neural tube closure during the third and fourth weeks of embryonic development, with folic acid supplementation (400 mcg daily preconception) reducing incidence by 50-70%. The nurse must perform systematic newborn assessment including Apgar scoring, gestational age assessment (Ballard score), and screening for congenital anomalies, metabolic disorders, and hearing deficits. On the exam, writers often pair stable-sounding options with unstable dataโnotice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are classic trap answers even when the clinical topic is familiar. Run a 60-second scan: breathing work and oxygenation, perfusion and end organs,...