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Umbilical cord blood acid-base analysis at delivery

Hyagriv N Simhan, MD, MS
Section Editor
Charles J Lockwood, MD, MHCM
Deputy Editor
Vanessa A Barss, MD, FACOG


Fetal acid-base balance can be assessed in a number of ways:

Antepartum, by percutaneous umbilical cord blood sampling (see "Fetal blood sampling")

Intrapartum, by fetal scalp blood sampling (see "Intrapartum fetal heart rate assessment", section on 'Fetal scalp blood sampling')

Immediately after birth, by umbilical cord blood sampling

Information from umbilical cord blood sampling immediately after birth can be useful from medical and medicolegal perspectives since it provides insight into intrapartum fetal physiology. This topic will review basic concepts of fetal acid-base physiology and discuss the clinical use of umbilical cord acid-base analysis at delivery.

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Literature review current through: Nov 2017. | This topic last updated: Sep 27, 2017.
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