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Year : 2019  |  Volume : 63  |  Issue : 1  |  Page : 49-54

Comparative evaluation of anaesthetic efficacy and haemodynamic effects of a combination of isobaric bupivacaine with buprenorphine vs. isobaric levobupivacaine with buprenorphine for spinal anaesthesia – A double blinded randomised clinical trial

1 Department of Anaesthesiology, Karnataka Institute of Medical Sciences, Hubballi, Dharwad, Karnataka, India
2 Sri Jayadeva Institute of Cardiovascular Sciences and Research, Kalaburagi, Karnataka, India

Correspondence Address:
Dr. Ashwini H Ramaswamy
Department of Anaesthesiology, Karnataka Institute of Medical Sciences, Hubballi - 580 022, Dharwad, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ija.IJA_667_17

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Background and Aims: Bupivacaine is the most frequently used local anaesthetic for spinal anaesthesia, however, use of levobupivacaine in clinical practice has advanced recently. This study aimed to compare the anaesthetic potency and haemodynamic effects of intrathecal bupivacaine with buprenorphine versus levobupivacaine with buprenorphine in infraumbilical surgeries. Methods: This prospective randomised double blind study was conducted in seventy patients aged 18–65 years, American Society of Anesthesiologists grade I-II, scheduled for lower abdominal and lower limb surgery under spinal anaesthesia. The patients either received 0.5% isobaric racemic bupivacaine 3 ml with 2 μg/kg of buprenorphine (Group B) or 0.5% isobaric levobupivacaine 3 ml with 2 μg/kg of buprenorphine (Group L). The time for onset of sensory block between the two groups was the priomary end-point. Other measurements included haemodynamic variables, sensory and motor blockade characteristics, postoperative analgesia, and complications in the first 24 h. Results: There was no significant difference in the onset of sensory block between the two groups. Sensory and motor blockade characteristics were similar between the two groups. However, there was significant fall in the heart rate at 5 min in Group B compared to Group L. There was statistically significant fall in systolic blood pressure in group B compared to Group L from 5 min up to 60 min and fall in diastolic blood pressure from 10 min to 45 min. Conclusion: Our study showed that onset of sensory block is similar between isobaric levobupivacaine with buprenorphine 37 38 and isobaric bupivacaine with buprenorphine.

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