Serbian Journal of Anesthesia and Intensive Therapy (Jan 2022)

The evaluation of the efficacy of 0.25% Bupivacaine and 0.5% Ropivacaine in ultrasound guided bilateral transversus abdominis plane block for post operative analgesia in lower abdominal surgeries

  • Gujjar Swamy Rao Ashwini,
  • Ghodageri Shruti,
  • Gowrasamudra Hanumanthappa Hanumanthappa Megha,
  • Kurella Srilekha

DOI
https://doi.org/10.5937/sjait2206131G
Journal volume & issue
Vol. 44, no. 5-6
pp. 131 – 137

Abstract

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The increasing use of nerve blocks for post operative analgesia has led to the development of several newer interfascial injection techniques for analgesia of the chest and abdominal wall. The unique feature of ultrasound guided truncal blocks is that in all of these techniques, in contrast to peripheral nerve blocks, no nerve or plexus needs to be identified. Local anaesthesia is injected in a particular muscle plane, in which the injectate spreads and reaches the intended nerves. Transversus abdominis plane (TAP) block has become a common analgesic method after surgery involving the abdominal wall. Aim: 1. To assess the efficacy of 0.25% Bupivacaine and 0.5% Ropivacaine in pain relief after lower abdominal surgeries using ultrasound guided transversus abdominis plane block (TAP). 2. Requirement of first rescue dose. 3.To assess complications related to the technique and drug related adverse effects. Methods: A comparative, randomised, double blinded study was carried out on 60 ASA physical status grade I and II patients of either sex between 18-40 years of age, scheduled for elective lower abdominal surgeries. 60 patients were divided equally by using computer generated random numbers into two groups. Group B received 15 ml of 0.25% Bupivacaine. Group R received 15 ml of 0.5% Ropivacaine. The TAP block was performed at the end of the surgery using the ultrasound. Results: Mean duration of analgesia was 373.75 minutes with SD of 66.1512 in Bupivacaine group and 687 minutes with SD of 119.433 in Ropivacaine group. The difference was highly significant in Group R compared to Group B (p < 0.0001). Conclusion: Thus, we conclude that 0.5% Ropivacaine provided longer duration of analgesia than 0.25% Bupivacaine when used in TAP block for providing post operative analgesia after lower abdominal surgeries.

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