TY - JOUR
T1 - The effect of the duration of the second stage of labour on the acid‐base state of the fetus
AU - KATZ, MIRIAM
AU - LUNENFELD, EITAN
AU - MEIZNER, ISRAEL
AU - BASHAN, NAVA
AU - GROSS, JACQUELINE
PY - 1987/5
Y1 - 1987/5
N2 - A prospective study was made in 153 patients with a second stage of labour lasting 1 to 120 min. Maternal venous, umbilical artery and vein blood were analysed for acid‐base variables and lactate levels. Blood was obtained immediately at delivery. Fetal heart rate monitoring data and blood test results were related to the duration of the second stage of labour and clinical outcome. In primiparae and multiparae there was a steady rise in umbilical artery lactate levels, with duration of second stage of labour, P>0·025 and P= 0·023, respectively. The median umbilical artery pH decreased significantly from 7·31 in patients with a second stage of labour that lasted ≤15 min to a pH of 7·25 in patients with a second stage of labour that lasted more than 30 min. Changes in Po2 and Pco2 were not statistically significant.
AB - A prospective study was made in 153 patients with a second stage of labour lasting 1 to 120 min. Maternal venous, umbilical artery and vein blood were analysed for acid‐base variables and lactate levels. Blood was obtained immediately at delivery. Fetal heart rate monitoring data and blood test results were related to the duration of the second stage of labour and clinical outcome. In primiparae and multiparae there was a steady rise in umbilical artery lactate levels, with duration of second stage of labour, P>0·025 and P= 0·023, respectively. The median umbilical artery pH decreased significantly from 7·31 in patients with a second stage of labour that lasted ≤15 min to a pH of 7·25 in patients with a second stage of labour that lasted more than 30 min. Changes in Po2 and Pco2 were not statistically significant.
UR - http://www.scopus.com/inward/record.url?scp=0023269364&partnerID=8YFLogxK
U2 - 10.1111/j.1471-0528.1987.tb03120.x
DO - 10.1111/j.1471-0528.1987.tb03120.x
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C2 - 3580325
AN - SCOPUS:0023269364
SN - 1470-0328
VL - 94
SP - 425
EP - 430
JO - BJOG: An International Journal of Obstetrics and Gynaecology
JF - BJOG: An International Journal of Obstetrics and Gynaecology
IS - 5
ER -