• J Anaesthesiol Clin Pharmacol · Apr 2015

    A comparison of continuous infusion and intermittent bolus administration of 0.1% ropivacaine with 0.0002% fentanyl for epidural labor analgesia.

    • Chinmayi Surendra Patkar, Kalpana Vora, Harshal Patel, Veena Shah, Manisha Pranjal Modi, and Geeta Parikh.
    • Department of Anaesthesia and Critical Care, G. R. Doshi and K. M. Mehta Institute of Kidney Diseases and Research Centre and Dr. H. L. Trivedi Institute of Transplantation Sciences, Civil Hospital Campus, Asarwa, Ahmedabad, Gujarat, India.
    • J Anaesthesiol Clin Pharmacol. 2015 Apr 1;31(2):234-8.

    Background And AimsMinimal consumption of local anesthetic and opioid for epidural labor analgesia has been advocated for safe obstetric outcome and superior maternal satisfaction. The primary objective of this study was to evaluate and compare the analgesic efficacy of mode of administration of epidural 0.1% ropivacaine with 0.0002% fentanyl via continuous infusion or intermittent boluses during labor.Material And MethodsSixty term primi or second gravida healthy parturients in labor requesting epidural analgesia were recruited in this study. Lumbar epidural catheter was inserted, and analgesia initiated with 0.2% ropivacaine. Patients were randomized to receive ropivacaine 0.1% with fentanyl 0.0002% via either continuous infusion (Group A) or intermittent boluses (Group B) on an hourly basis. If the parturient complained of pain and visual analog scale (VAS) score was >3, an additional bolus of the study drug was given. VAS score, motor blockade, maternal hemodynamics and fetal heart sounds were frequently monitored. Side effects, mode of delivery and neonatal outcome were noted.ResultsTo achieve similar VAS, the mean total dose of ropivacaine was 18.78 ± 3.88 mg in Group A and 16.86 ± 4.3 mg in Group B, the difference being statistically significant (P = 0.04). Seventeen out of 30 patients in Group A that is, 56.6% and nine patients in Group B that is, 30% required additional top-ups, and this was significantly higher (P = 0.037). Side effects, mode of delivery and neonatal outcome were comparable in both groups.ConclusionIntermittent bolus administration provides a more efficacious route of drug delivery when compared to continuous infusion by significantly decreasing the total amount of local anesthetic plus opioid without adversely affecting patient safety or maternal satisfaction.

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