NORMAL VALUES FOR FETAL SCALP TISSUE pH DURING LABOUR
- 1 September 1979
- journal article
- Published by Wiley in BJOG: An International Journal of Obstetrics and Gynaecology
- Vol. 86 (9) , 728-731
- https://doi.org/10.1111/j.1471-0528.1979.tb11275.x
Abstract
Normal values for fetal scalp tissue pH during labour were determined by using a glass electrode (Kontron-Roche). A total of 132 recordings was obtained and 84 (64 per cent) were of good quality. After a good quality recording had been obtained, there were 64 infants with an Apgar score of 9 or 10 at one and five minutes after delivery. The 64 recordings showed pH values (Mean +/- 2SEM) of 7.38 +/- 0.12 six hours before delivery and 7.28 +/- 0.12 at the time of delivery. Between the 5th and 55th minutes of the second stage of labour the pH (Mean +/- 2SEM) fell from 7.30 +/- 0.14 to 7.20 +/- 0.13.Keywords
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