ORIGINAL ARTICLE
Year : 2014  |  Volume : 7  |  Issue : 4  |  Page : 514-517

The analgesic efficacy of preincisional peritonsillar versus intravenous ketamine with bupivacaine infiltration for tonsillectomy in children: a randomized double-blind controlled study


1 Department of Anaesthesia and Intensive Care, Mansoura University, Mansoura, Egypt
2 Department of Otolaryngology, Mansoura University, Mansoura, Egypt

Correspondence Address:
Nahla S El Bahnasawy
Department of Anaesthesia and Intensive Care, Mansoura University, Mansoura
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1687-7934.145685

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Objective This study aimed to evaluate the postoperative analgesic efficacy of either preincisional peritonsillar infiltration of ketamine in combination with bupivacaine, or intravenous ketamine combined with infiltration of bupivacaine. Patients and methods A total of 60 patients were randomized into three groups: intravenous group, in which patients received intravenous ketamine (0.5 mg/kg) in 10 ml plus peritonsillar infiltration of bupivacaine 2 ml (5 mg/ml); infiltration group, in which patients received peritonsillar infiltration of ketamine (0.5 mg/kg) in 2 ml plus bupivacaine 2 ml and intravenous 10 ml saline; and placebo group, in which patients received 10 ml intravenous saline and peritonsillar infiltration of 2 ml saline plus 2 ml bupivacaine 2 ml/tonsil. The Children's Hospital of Eastern Ontario Pain Scale (CHEOPS) and Wilson scale were used to evaluate pain and sedation, respectively. Time to first analgesic request and total analgesic request, total analgesic consumption during 24 h postoperatively, intraoperative blood loss, and adverse effects were evaluated. Results Time to analgesic request was significantly prolonged in the intravenous and infiltration groups (4.3 ± 2.1 and 11.6 ± 3.6 h, respectively) compared with the placebo group (1.2 ± 1.2 h), with significant prolonged time in the infiltration group compared with the intravenous group. Significant lower (CHEOPS) scores and significant lower analgesic consumption were observed in the intravenous and infiltration groups (69 ± 4.1 and 45.1 ± 2.1 mg), respectively, compared with the placebo group (90.6 ± 5.3 mg). Both the intravenous and infiltration groups had comparable pain scores, with statistical significance at 4, 6, and 8 h postoperatively. Dysphagia was significantly higher in the placebo group compared with the intravenous and infiltration groups. No serious complication was reported in the three groups. Conclusion Intravenous or peritonsillar infiltration of ketamine with bupivacaine enhanced post-tonsillectomy analgesia in children. In comparison, the analgesic efficacy of infiltration of ketamine was superior to intravenous administration, without significant side effects.


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