Risk Factors of Delivery Newborn Apgar Score ≤ 7 at 1 minute

Abstract

Case-control study of pregnant women who delivered newborn with Apgar score ≤ 7 at 1 minute during October 1997 to September 1999 and control with pregnant women who delivered newborn with Apgar score > 7 at 1 minute in the same period. Using study cases : control cases = 1 : 2, we obtain 180 study cases and control with 360 cases.

Fourteen risk factors were grouped and univariate and multivariate analysis were used to find out real risk factors. Only 6 risk factors were statistically significant : pregnancy induced hypertension (OR = 12.83, 2.511 - 65.561), prolonged second stage (OR = 8.73, 2.229 - 34.192), moderate to thick meconium stain of amniotic fluid (OR = 5.063, 2.606 - 9.831), breech presentation (OR = 3.93, 1.693 - 9.144), gestational age less than 37 weeks (OR = 3.74, 1.764 - 7.928), and birth weight < 2500 g. (OR = 2.11, 1.071 -4.139).

Most of the risk factors of low Apgar score newborn at 1 minute were simple to identify. Early detection and appropriate care should decrease newborn of low Apgar score.