This is a revised statement published jointly with the American College of Obstetricians and Gynecologists that emphasizes the appropriate use of the Apgar Score. Title Umbilical cord blood gas analysis. Abstract Umbilical cord blood gas and pH values should always be obtained in the high-risk delivery and whenever newborn depression occurs. A complete blood gas analysis may provide important information regarding the type and cause of acidemia and sampling the artery and vein may provide a more clear assessment. The sampling technique is simple and easily mastered by any treatment person in the delivery room.
Preheparinized syringes ensure a consistent dose and amount of heparin.
In general, the lower range for normal arterial pH extends to at least 7.10 and that for venous pH to at least 7.20. Many different factors during pregnancy, labor, and delivery can affect cord blood gases. Umbilical blood sampling for acid-base status at all deliveries cannot be universally recommended because many facilities do not have the capabilities to support such a practice and in doing so may impose an excessive financial burden. Considering the costs, the accumulated published data, and the nonspecificity of electronic fetal monitoring in the evaluation of fetal oxygenation, it may be more rational to implement universal cord blood gas analysis. A Institution Department of Obstetrics and Gynaecology, University of Adelaide Women's and Children's Hospital, North Adelaide, South Australia 5006, Australia.