Evaluation of the Effects of Ultra-Low Dose Naloxone on Brachial Plexus Block with Bupivacaine

Authors

  • Amit Sharma Bhattarai Maharajgunj Medical Campus, Institute of Medicine, Nepal
  • Gentle Sunder Shrestha Maharajgunj Medical Campus, Institute of Medicine, Nepal https://orcid.org/0000-0003-0385-2340
  • Megha Koirala Maharajgunj Medical Campus, Institute of Medicine, Nepal
  • Pramesh Sunder Shrestha Maharajgunj Medical Campus, Institute of Medicine, Nepal
  • Moda Nath Marhatta Nepalgunj Medical College, Nepal

DOI:

https://doi.org/10.3126/bjhs.v6i1.37640

Keywords:

Bupivacaine, naloxone, supraclavicular brachial plexus block, ultra-low dose

Abstract

Introduction: Adjuvants are used in conjunction with local anaesthetics for brachial plexus block to quicken onset, prolong duration and augment the quality of anaesthesia.

Objectives: The study aims to evaluate the effect of adding ultra-low dose naloxone to bupivacaine on the duration of postoperative analgesia.

Methodology: A prospective, randomized, double-blind study was conducted including forty American Society of Anesthesiologists Physical Status (ASA PS) I and II patients of either sex between 15 and 65 years of age scheduled for upper limb surgery. They were randomized into two groups. Group BN received a mixture of 0.33% plain bupivacaine with ultra-low dose naloxone (100 ng) and group BS received 0.33% plain bupivacaine with saline. The procedure was standardized in both groups. The onset of sensory and motor block were assessed with pinprick sensation and muscle power respectively. Visual Analogue Score (VAS) was used to assess the pain at 1, 2, 4, 8 and 12 hours postoperatively.

Result: The patients were comparable with respect to age, sex, ASA PS, baseline hemodynamic and respiratory parameters and duration of surgery. The mean duration of analgesia in group BN was significantly longer (610.7±125.4 mins) as compared to group BS (354.3±59.6 mins) (p<0.001). No complications were noted in both the groups.

Conclusion: This study demonstrated that 100 ng naloxone, when used with 0.33% plain bupivacaine for supraclavicular brachial plexus block, prolongs postoperative analgesia significantly after upper limb surgeries, without any significant side effects. 

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Author Biographies

Amit Sharma Bhattarai, Maharajgunj Medical Campus, Institute of Medicine, Nepal

Lecturer, Department of Anaesthesiology

Gentle Sunder Shrestha, Maharajgunj Medical Campus, Institute of Medicine, Nepal

Associate Professor, Department of Anaesthesiology

Megha Koirala, Maharajgunj Medical Campus, Institute of Medicine, Nepal

Lecturer, Department of Anaesthesiology

Pramesh Sunder Shrestha, Maharajgunj Medical Campus, Institute of Medicine, Nepal

Associate Professor, Department of Anaesthesiology

Moda Nath Marhatta, Nepalgunj Medical College, Nepal

Professor, Department of Anaesthesiology

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Published

2021-06-14

How to Cite

Bhattarai, A. S., Shrestha, G. S., Koirala, M., Shrestha, P. S., & Marhatta, M. N. (2021). Evaluation of the Effects of Ultra-Low Dose Naloxone on Brachial Plexus Block with Bupivacaine. Birat Journal of Health Sciences, 6(1), 1373–1376. https://doi.org/10.3126/bjhs.v6i1.37640

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Section

Original Research Articles