PMID: 1200081Dec 15, 1975Paper

Lumbar epidural analgesia with bupivacaine in labor. Drug concentration in maternal and neonatal blood at birth and during the first day of life

American Journal of Obstetrics and Gynecology
P BelfrageB Thalme

Abstract

Lumbar epidural analgesia with bupivacaine was administered to 33 women for relief of pain during labor. At delivery blood samples were drawn from the umbilical cord vessels and from a maternal peripheral vein. Blood samples were also collected from the noenate and its mother, 1, 4, and 20 hours after delivery. Analyses of bupivaccaine concentrations were carried out in all samples with a gas-chromatographic technique. The drug concentration in the umbilical vein (UV) was usually higher than the corresponding umbilical artery value (UA), but with increasing time interval between the last bupivaccaine infection and delivery the UA/UV drug concentration ratio rose. After delivery the rate of drug decline in blood was similar in mother and newborn infant. The clinical condition of the infant was unrelated to the drug concentration in the umbilical cord vessels.

Citations

Jan 1, 1978·Anaesthesia·S F StainthorpM A Tobias
Dec 1, 1992·Developmental Medicine and Child Neurology·C M SepkoskiT B Brazelton
Dec 1, 1980·Acta Anaesthesiologica Scandinavica·C CarlssonA Hanson
Feb 1, 1987·Australian Paediatric Journal·A BennettD Bartlett
Feb 1, 1988·The Australian & New Zealand Journal of Obstetrics & Gynaecology·P Brownridge
Aug 1, 1977·Archives of Disease in Childhood·L V CooperP J Aggett
Jun 10, 2010·Anesthesia and Analgesia·Yaakov Beilin, Stephen Halpern
Apr 1, 1995·International Journal of Obstetric Anesthesia·F Reynolds
Jan 1, 1986·Annales Françaises D'anesthèsie Et De Rèanimation·J P Haberer, C Monteillard

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