What is the most important thing on apgar score to be concerned about?

Pulse&resp effort. Pulse, resp. Effort, tone, color and reflex irritability the 5 items that are scored. This is a way to measure the baby's ability to adapt to the extrauterine enviornmet. Anything over 7 is good and the 5 min # is most impt. Pulse and respiratory effort are the most impt part of the score.