The Apgar Score is a quick neonatal diagnostic test used to evaluate and summarize a newborn baby’s health during the first few minutes of life. The Apgar score takes into account the baby’s heart rate, respiratory function, responsiveness, muscle tone and skin color. Apgar scores are often used to diagnose HIE, as low Apgar scores may indicate that a baby experienced oxygen deprivation during delivery. https://hiehelpcenter.org/medical/identifying-hie/sign-symptoms/