Specialty
OB, L&D, peds, and the NICU/PICU.
Five signs, scored 0 to 2, at one and five minutes. The Apgar is one of the most recognised numbers in medicine and one of the most misread — it describes how a newborn is transitioning, it does not start the resuscitation and it does not predict the child's future.
Naegele's rule, why gestational age is counted from the last period rather than conception, and why an early ultrasound can move a due date that a calculator was confident about. A short guide to the number that drives most obstetric decisions.