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CLINICAL INVESTIGATION
Year : 2014  |  Volume : 58  |  Issue : 1  |  Page : 43-47

A comparative study between intrathecal clonidine and neostigmine with intrathecal bupivacaine for lower abdominal surgeries


Department of Anaesthesiology, Adichunchanagiri Institute of Medical Sciences, Mandya, Karnataka, India

Correspondence Address:
N Yoganarasimha
Department of Anaesthesiology, Adichunchanagiri Institute of Medical Sciences, Mandya, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5049.126794

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Background and Aims: Spinal anaesthesia requires a small volume of drug to produce profound reproducible sensory analgesia and motor blockade, but has limited duration of action. A properly chosen adjuvant to local anaesthetic agent produces the best way to achieve a better quality regional block. Hence, a study was conducted to compare the effect of intrathecal clonidine 75 μg or neostigmine 50 μg added to intrathecal hyperbaric bupivacaine, with regards to sensory characteristics, motor characteristics, haemodynamic stability and side effects. Methods: This was a prospective randomized experimental study in 50 patients posted for lower abdominal surgery belonging to ASA I and II status and aged between18 and 60 years. One group received intrathecal clonidine 75 μg and 2.5 ml (12.5 mg) of intrathecal 0.5% hyperbaric bupivacaine (group BC) and second group received neostigmine 50 μg with 2.5 ml (12.5mg) of intrathecal 0.5% hyperbaric bupivacaine (group BN) and they were compared with regards to sensory characteristics, motor characteristics, haemodynamic stability and side effects. Results: Addition of 50 μg neostigmine significantly enhanced the onset of sensory block (BN - 90 ± 15 secs, BC-160 ± 20 secs, P value as <0.05) and motor block (BN-110 ± 15 secs, BC-210 ± 20 secs, P value as <0.05) compared to clonidine. Haemodynamics were well maintained in the neostigmine group. Group BC had prolonged analgesia (362 ± 36 mins) compared to BN group (300 ± 25 mins)(P < 0.05) with no serious adverse effects noted perioperatively in either groups. Conclusion: Intrathecal clonidine with hyperbaric bupivacaine produces prolonged postoperative analgesia and intrathecal neostigmine with bupivacaine produces a good sensory and motor for the surgical procedure.


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