• Br J Anaesth · Oct 2020

    Review Meta Analysis Comparative Study

    Comparative analgesic efficacy and safety of intermittent local anaesthetic epidural bolus for labour: a systematic review and meta-analysis.

    Intermittent Epidural Bolus improves maternal pain control & satisfaction, and reduces labor duration, motor block & local anaesthetic consumption.

    pearl
    • Nasir Hussain, Christopher M Lagnese, Blair Hayes, Nicolas Kumar, Tristan E Weaver, Michael K Essandoh, Joseph Reno, Robert H Small, and Faraj W Abdallah.
    • Department of Anesthesiology, Ohio State University, Wexner Medical Center, Columbus, OH, USA.
    • Br J Anaesth. 2020 Oct 1; 125 (4): 560-579.

    BackgroundContinuous epidural infusion (CEI) is commonly used for labour analgesia, but concerns over potential motor block, second-stage labour complications, and ineffective analgesia in late labour have prompted examining intermittent epidural bolus (IEB) as an alternative. However, evidence comparing these modalities is conflicting. The meta-analysis evaluates the analgesic efficacy of CEI vs IEB.MethodsDatabases were searched for trials comparing CEI to IEB for labour analgesia. The two co-primary outcomes were risk of breakthrough pain and difference in area under the curve (AUC) for pain scores during the first 4 h post-epidural initiation. Local anaesthetic consumption, maternal outcomes (i.e. delivery mode, labour duration, and maternal satisfaction), and side-effects of epidural analgesia were also evaluated. Results were pooled using random-effects modelling. Trial sequential analysis (TSA) was used to evaluate evidence reliability.ResultsTwenty-seven studies (3133 patients) were analysed. Compared with CEI, IEB decreased risk of breakthrough pain by 38% (risk ratio [95% confidence interval {CI}] of 0.62 [0.48, 0.81]; P=0.0004; I2=47%; 1164 patients) and reduced AUC of pain during the 4 h interval by 32.9% (mean difference [95% CI] of -16.7 mm h-1 [-18.9, -14.4]; P<0.0001; 1638 patients). Intermittent epidural bolus enhanced maternal satisfaction, shortened labour duration, decreased motor block, and reduced local anaesthetic consumption. The difference between the two groups was not statistically significant for epidural side-effects or mode of delivery. The TSA indicated adequate power for reliable inferences.ConclusionsIntermittent epidural bolus provides improved labour pain control during the first 4 h after epidural initiation with less breakthrough pain. Moderate- to high-quality evidence of intermittent epidural bolus superiority support its use as a safe and effective continuous epidural infusion alternative for labour analgesia.Copyright © 2020 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

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    pearl
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    Intermittent Epidural Bolus improves maternal pain control & satisfaction, and reduces labor duration, motor block & local anaesthetic consumption.

    Daniel Jolley  Daniel Jolley
     
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