Umbilical cord blood gas analysis at delivery

James A. Thorp, Gary A. Dildy, Edward R. Yeomans, Bruce A. Meyer, Valerie M. Parisi

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Fetal acid-base status is the end point that all antepartum and intrapartum surveillance tools are designed to assess, either directly or indirectly. Umbilical arterial blood pH is normal in 80% of depressed newborns, thereby proving the absence of birth asphyxia both in the delivery room and in the courtroom. The technique, normal ranges, and risks, benefits and cost analysis of routine versus selected umbilical blood sampling are considered. The American College of Obstetricians and Gynecologists recommends performing umbilical blood sampling for acid-base analysis in selected deliveries. However, in our opinion routine umbilical blood sampling at all deliveries has merit.

Original languageEnglish (US)
Pages (from-to)517-522
Number of pages6
JournalAmerican journal of obstetrics and gynecology
Issue number3 PART I
StatePublished - 1996


  • Cord pH
  • Umbilical cord blood gas analysis

ASJC Scopus subject areas

  • Obstetrics and Gynecology


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