• J Clin Anesth · Dec 2016

    Comparative Study

    Does nitrous oxide labor analgesia influence the pattern of neuraxial analgesia usage? An impact study at an academic medical center.

    • Lesley E Bobb, Michaela K Farber, Catherine McGovern, and William Camann.
    • Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115. Electronic address: lbobb@partners.org.
    • J Clin Anesth. 2016 Dec 1; 35: 54-57.

    Study ObjectiveTo compare the rate of epidural use before and after the implementation of nitrous oxide (N2O).DesignData were obtained from a nursing database of N2O usage and our obstetric anesthesia database. We compared 8 months before and 8 months after the introduction of N2O. It was available 24 h/d, 7 d/wk, consistent with neuraxial analgesia availability. Epidural utilization before and after introduction of N2O was compared using χ2 analysis.SettingLabor and delivery floor.Main ResultsTotal number of births over the study period was 8539: 4315 pre-N2O and 4224 post-N2O. The rate of epidural usage was 77% pre-N2O and 74% after N2O (P= not significant, χ2). A total of 762 patients used N2O. Monthly analysis showed no change in pattern of neuraxial analgesia use in post-N2O period compared with the pre-N2O period.ConclusionThe introduction of N2O for labor analgesia was not associated with any change in our rate of labor epidural utilization. Under the conditions of our study, these results suggest that N2O does not discourage neuraxial use for labor pain relief.Copyright © 2016 Elsevier Inc. All rights reserved.

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