Epidural Anesthesia for cesarean section

Hughes, Everett C.

doi:10.1016/0002-9378(53)90332-9

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“…3 Traditionally, crystalloid intravenous fluids were administered before the induction of spinal anesthesia for Cesarean delivery (preload). 4 In non-pregnant patients, coloading has been shown to better maintain cardiac output after spinal anesthesia. 5 Recently, some authors have suggested that fluid administration should take place at the time of induction of anesthesia for Cesarean delivery.…”

Section: Introductionmentioning

confidence: 99%

Pré-charge ou co-charge lors de rachianesthésie pour un accouchement non urgent par césarienne: une méta-analyse

Banerjee

Stocche

Angle

et al. 2009

Can J Anesth/J Can Anesth

114

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Background Hypotension following spinal anesthesia for Cesarean delivery is common. Fluid loading is recommended to prevent hypotension, but preload is often ineffective. In non-pregnant patients, coloading has been shown to better maintain cardiac output after spinal anesthesia. The purpose of this meta-analysis was to determine whether the timing of the fluid infusion, before (preload) or during (coload) induction of spinal anesthesia for Cesarean delivery, influences the incidence of maternal hypotension or neonatal outcome. Methods We retrieved randomized controlled trials that compared a fluid preload with coload in patients undergoing spinal anesthesia for elective Cesarean delivery. We graded the articles for quality of reporting (maximum score = 5) and recorded the incidence of hypotension, lowest blood pressure, the incidence of maternal nausea and vomiting, umbilical cord pH, and Apgar scores. We combined the results using random effects modelling. Results We retrieved eight studies comprised of 518 patients. The median quality score for the published studies was three. The incidence of hypotension in the coload group was 159/268 (59.3%) compared with 156/250 (62.4%) in the preload group (odds ratio [OR] = 0.93; 95% confidence interval [CI] 0.54-1.6). There were no significant differences between groups in any of the other outcomes. Conclusions It is unnecessary to delay surgery in order to deliver a preload of fluid. Regardless of the fluid loading strategy, the incidence of maternal hypotension is high. Prophylactic or therapeutic vasopressors may be required in a significant proportion of patients. RésuméContexte L'hypotension est un phe´nome`ne courant a`la suite d'une rachianesthe´sie pour un accouchement par ce´sarienne. Il est recommande´d'administrer une charge liquidienne pour pre´venir l'hypotension, mais la pre´-charge est souvent peu efficace. Chez les patients et patientes non enceintes, il a e´te´de´montre´que la co-charge maintenait mieux le de´bit cardiaque apre`s une rachianesthe´sie. L'objectif de cette me´ta-analyse e´tait de de´terminer si le moment de perfusion liquidienne, soit avant (pre´-charge) ou pendant (co-charge) l'induction de la rachianesthe´sie pour un accouchement par ce´sarienne, influençait l'incidence d'hypotension chez la me`re ou le devenir du nouveau-ne´. Méthode Nous avons extrait des e´tudes randomise´es contrôle´es comparant une pre´-charge a`une co-charge liquidienne chez des patientes subissant une rachianesthe´sie pour un accouchement par ce´sarienne non urgent. Nous avons attribue´une note aux articles selon la qualite´de la pre´sentation (score maximal = 5) et note´l'incidence d'hypotension, la tension arte´rielle la plus basse, l'incidence de nause´es et vomissements chez la me`re, le pH du sang du cordon ombilical et les scores d'Apgar. Nous avons combine´les re´sultats a`l'aide d'un mode`le a`effets ale´atoires. 123Can J Anesth/J Can Anesth (2010) 57:24-31 DOI 10.1007 Résultats Nous avons retenu huit e´tudes comprenant 518 patientes. Le score ...

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Section: Introductionmentioning

confidence: 99%