King's College London

Research portal

Changes in human fetal cerebral hemoglobin concentration and oxygenation during labor measured by near-infrared spectroscopy

Research output: Contribution to journalArticle

D. M. Peebles, A. D. Edwards, J. S. Wyatt, A. P. Bishop, M. Cope, D. T. Delpy, E. O. Reynolds

Original languageEnglish
Pages (from-to)1369-1373
Number of pages5
JournalAmerican Journal of Obstetrics and Gynecology
Issue number5
Publication statusPublished - 1992

Bibliographical note

M1 - 5 Peebles, D M Edwards, A D Wyatt, J S Bishop, A P Cope, M Delpy, D T Reynolds, E O Wellcome Trust/United Kingdom Research Support, Non-U.S. Gov't United states American journal of obstetrics and gynecology Am J Obstet Gynecol. 1992 May;166(5):1369-73.

King's Authors


OBJECTIVE: The purpose of this study was to measure by near-infrared spectroscopy changes in human fetal cerebral oxyhemoglobin, deoxyhemoglobin, and cerebral blood volume during labor and to calculate mean cerebral hemoglobin oxygen saturation. STUDY DESIGN: The effects of uterine contractions with and without fetal heart rate decelerations were compared in eight singleton term fetuses. Results were analyzed by analysis of variance. RESULTS: In six of eight fetuses normal uterine contractions were associated with proportional decreases in both oxyhemoglobin and deoxyhemoglobin and a fall in cerebral blood volume without desaturation of cerebral hemoglobin. Contractions with fetal heart rate decelerations produced different results in that oxyhemoglobin fell but deoxyhemoglobin rose, indicating cerebral desaturation. In two of the eight fetuses normal contractions were associated with increases in oxyhemoglobin, deoxyhemoglobin, and cerebral blood volume; no decelerations were seen in either fetus. Mean cerebral hemoglobin oxygen saturation calculated during normal contractions was 43% +/- 10% (SD). CONCLUSION: Uterine contractions were associated with detectable changes from baseline in cerebral oxyhemoglobin, deoxyhemoglobin, and cerebral blood volume.

View graph of relations

© 2018 King's College London | Strand | London WC2R 2LS | England | United Kingdom | Tel +44 (0)20 7836 5454