Abstract
The aim of this study was to investigate the relationship between preoperative oral fluids and gastric pH and volume in women undergoing sterilization between one and five days postpartum. Fifty postpartum patients received 150 ml water approximately two to three hours before surgery while 50 postpartum and 50 non-pregnant women were fasted from midnight. After induction of anaesthesia, gastric contents were aspirated using a Salem sump tube and the gastric pH and volume were measured. There were no differences in intragastric pH and volume, median (range), among the postpartum fasted group, 1.19 (0.74–4.57) 22 (1–78) ml, postpartum water group 1.18 (0.70–6.4), 25.5 (3–66) ml and the non-pregnant group 1.27 (0.51–6.63), 25 (3–69) ml. There was no correlation between postpartum interval, 60 (12–120) hr, and intragastric pH or volume. It is concluded that oral water may be given safely two to three hours preoperatively to patients more than one day postpartum. Intragstric volume and acidity were not increased and the findings in postpartum patients were similar to those found in non-pregnant patients.
Résumé
Cette étude vise à évaluer la relation entre l’hydratation orale préopératoire et le volume gastrique et son pH, chez des femmes programmées pour stérilisation entre le premier et le cinquième jour qui suivent l’accouchement. Cinquante accouchées ont reçu 150 ml d’eau à environ deux à trois heures avant la chirurgie alors que 50 accouchées et 50 non-parturientes sont gardées à jeun compter à de minuit. Après l’induction de l’anesthésie, on aspire le contenu gastrique avec un tube de drainage Salem et mesure son pH et son volume. Les résultats montrent qu’il n’y a pas de différences de médiane (et d’écart) entre pH gastrique et volume entre les groupes post-partum à jeun, 1,19 (0,74–4,57), 22 (1–78) ml; groupe post-partum hydraté 1,18 (0,70–6,4), 25,5 (3–66) ml et le groupe des non-parturientes 1,27 (0,51–6,63), 25 (3–69) ml. Il n’y a pas de corrélation entre l’intervalle post-accouchement, 60 (12–120) heures et le volume et le pH gastrique. On en conclut que les patientes peuvent boire de l’eau deux à trois heures avant une intervention prévue le lendemain ou plus tard après l’accouchement. Le volume intragastrique et l’acidité n’augmentent pas et on constate que les valeurs mesurées sont indépendantes de la parturition.
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Lam, K.K., So, H.Y. & Gin, T. Gastric pH and volume after oral fluids in the postpartum patient. Can J Anaesth 40, 218–221 (1993). https://doi.org/10.1007/BF03037033
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DOI: https://doi.org/10.1007/BF03037033