Obstetric high risk screening and prediction of neonatal morbidity.

A retrospective study using an obstetric risk score protocol was applied to a stratified sequential sample of 843 singleton livebirths, occurring in the Royal Hospital for Women, Sydney, over a 12-month period (March, 1985-February, 1986). Data collection included 53 prenatal factors, 41 intrapartum factors and 37 neonatal factors. The study was comprised of 346 women admitted to the hospital birth centre and 497 women admitted to labour ward. In labour ward admitted women there was a significant association between high prenatal scores, high intrapartum scores and high neonatal morbidity scores. Women admitted to the birth centre were subjected to a screening procedure which resulted in low prenatal and relatively low intrapartum risk scores. However, neonatal morbidity scores were similar for both groups. The risk scoring protocol used in this study requires further revision to allow the adequate selection of low risk women delivering infants with a low risk of neonatal morbidity in a low risk obstetric setting.