Year : 2011  |  Volume : 5  |  Issue : 1  |  Page : 31-35

Evaluation of analgesic effects of intrathecal clonidine along with bupivacaine in cesarean section

Department of Anesthesiology, CSMMU (erstwhile KGMC), Lucknow, Uttar Pradesh, India

Correspondence Address:
Nikhil Kothari
Department of Anesthesia, CSMMU, Lucknow, Uttar Pradesh
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Source of Support: Department of Anesthesia,CSMMU augmentation fund for research purpose., Conflict of Interest: None

DOI: 10.4103/1658-354X.76499

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Aims and Context: The objective of the present study was to evaluate the analgesic and adverse effects of intrathecal clonidine with hyperbaric bupivacaine in spinal anesthesia. Settings and Design : Randomized single blind trial. Methods: 210 ASA I-II pregnant females undergoing emergency cesarean section were randomized in a single-blind fashion to one of the three groups. In group I (n=70) patients received 12.5 mg of 0.5% hyperbaric bupivacaine intrathecally. In group II (n=70) patients received intrathecal mixture of 0.5% hyperbaric bupivacaine (8 mg) and clonidine 50 μg. In group III (n=70) , patients received 0.5% hyperbaric bupivacaine (10 mg) intrathecally along with 50 μg of clonidine. Statistical Analysis Used: Groups were compared using one-way ANOVA with the Bonferroni multiple comparison post hoc test. The proportion of adverse events was compared using the chi-square test (χ2 =57.2410). Results: On adding 50 μg clonidine, we were able to reduce intrathecal dose of bupivacaine for cesarean section to 8 mg. Patients receiving intrathecal clonidine along with bupivacaine had significantly long lasting analgesia with lower bupivacaine dose [246.21±5.15 min. (group II) vs 146.0±4.55 min (group I), P=0.021; 95% confidence interval: 238.01-257.40, group II and 134.99-157.0 group I]. Conclusions: Addition of intrathecal clonidine causes some sedation in the postoperative period, but it provides adequate analgesia and motor paralysis at lower dose of bupivacaine. It also significantly prolongs postoperative pain relief.

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