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General anesthesia for cesarean is associated with an increased risk of maternal morbidity compared with neuraxial anesthesia. Reducing the rate of general anesthesia for urgent cesarean in women with epidural analgesia may improve maternal outcomes. Our objective was to identify the rate and factors associated with the conversion to general anesthesia for urgent cesarean among women with labor epidural analgesia.We performed a retrospective case-control study including singleton-laboring women with epidural analgesia who delivered after 37 gestational weeks by urgent cesarean (Port Royal Maternity unit, 2012-2017). Cases were all women who required conversion from neuraxial analgesia to general anesthesia. Controls were women just before and after each case included. Factors associated with the conversion to general anesthesia were identified using logistic regression analysis.Among 3,300 laboring women with an epidural analgesia who delivered by urgent cesarean during the study period, 113 (3.4%,) had a conversion to general anesthesia. Factors associated with conversion to general anesthesia were a cervical dilation ≥ 5 cm at the time of epidural placement (aOR 2.55, 95%CI 1.05-6.21), asymmetric sensory blockade (aOR 3.39, 95%CI 1.11-10.36), need for ≥2 rescue top-ups (aOR 2.88, 95%CI 1.29-6.44), and category 1 cesarean (aOR 3.61, 95%CI 1.77-7.33).Among women with labor epidural analgesia, suboptimal analgesia significantly increased the risk for conversion to general anesthesia for urgent cesarean. Epidural placement without delay during labor, regular checks of epidural analgesia efficiency, and epidural replacement in case of inadequate epidural analgesia may decrease the rate of avoidable general anesthesia for urgent cesarean. |
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