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CLINICAL INVESTIGATION
Year : 2014  |  Volume : 58  |  Issue : 2  |  Page : 138-142

Dexmedetomidine decreases the requirement of ketamine and propofol during burns debridement and dressings


1 Department of Anaesthesiology and Intensive Care, Narayana Medical College and Super Specialty Hospital, ChinthareddyPalem, Nellore, Andhra Pradesh, India
2 Department of Clinical Pharmacology and Clinical Research, Narayana Medical College and Super Specialty Hospital, ChinthareddyPalem, Nellore, Andhra Pradesh, India

Correspondence Address:
Prabhavathi Ravipati
Department of Anaesthesiology and Intensive Care Narayana Medical College and Super Specialty Hospital Chinthareddy Palem, Nellore - 524 002, Andhra Pradesh
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5049.130813

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Background and Aims: Dexmedetomidine (Dex), a highly selective α2 -adrenoreceptor agonist, is used for sedation management in various clinical settings and shows anaesthetic-sparing effect. Our aim was to study the effects of Dex on requirements of propofol, ketamine, and intraoperative haemodynamic variations during burns debridement and dressing changes, and compare its effectiveness and safety with combination of ketamine and propofol. Methods: Sixty adult patients posted for elective debridement and dressing were included in the study. Thirty patients received Dex (intramuscular)(IM) 1 μg/kg, 1 h before shifting to the operation theatre while the other thirty did not. Anaesthesia was induced with propofol and ketamine followed by adjusted infusion to achieve a Ramsay Sedation Scale score (RSS) of six in all patients. Intraoperatively haemodynamic parameters were recorded at regular intervals of 5, 15, 30, 45, and 60 min. The mean data between the groups were compared by unpaired t test and medians by Mann-Whitney U test. Within group analysis was performed by using repeated measures ANOVA. P < 0.05 was considered significant. Results: The dose requirement of ketamine and propofol in Dex group was significantly lower when compared to control group (100.5 ± 17.58 mg vs. 231.5 ± 60.39 mg (P < 0.0001) and 127.7 ± 15.47 mg vs. 254 ± 59.22 mg (P < 0.0001) respectively). Additionally, recovery time was lower in the Dex group as compared to the control group, 9.57 ± 1.50 min vs. 11.53 ± 2.56 min (P = 0.0006). Haemodynamic variations were also significantly lower in the Dex group as compared to the control group. Conclusion: Dexmedetomidine (1 μg/kg IM) reduced the requirement of propofol and ketamine, with more stable intraoperative haemodynamics.


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