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Year : 2020  |  Volume : 64  |  Issue : 10  |  Page : 863-868

Dexmedetomidine nebulisation attenuates post-operative sore throat in patients undergoing thyroidectomy: A randomised, double-blind, comparative study with nebulised ketamine

Department of Anaesthesiology, Amala Institute of Medical Sciences, Thrissur, Kerala, India

Correspondence Address:
Derlin Thomas
Department of Anaesthesiology, Amala Institute of Medical Sciences, Thrissur - 680 555, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ija.IJA_406_20

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Background and Aims: Endotracheal intubation is the predominant cause of airway mucosal injury, resulting in post-operative sore throat (POST), with an incidence of 20-74%, which brings immense anguish to patients. This study was conducted to evaluate and compare the efficacy of nebulised dexmedetomidine and ketamine in decreasing POST in patients undergoing thyroidectomy. Methods: Patients were randomly allocated into two groups of 50 each; Group 1 received ketamine 50mg (1mL) with 4mL saline nebulisation, while Group 2 received dexmedetomidine 50μg (1mL) with 4mL saline nebulisation for 15 min. GA was administered 15 min after completing nebulisation. POST monitoring was done at 0,2,4,6,12 and 24h after extubation. POST was graded on a four-point scale (0-3). The statistical analysis were performed using Statistical Package for Social Sciences (SPSS) software version 17.0. Fisher Exact-t-test, Chi square test, Student t-test, Paired t test and repeated measure analysis of variance (ANOVA) were used for analysis. Results: The overall incidence of POST in this study was 17%: POST was experienced by seven patients (14.3%) in ketamine and 10 patients (20.4%) in dexmedetomidine group (P = 0.424). There was no statistically significant difference in the incidence of POST between the two groups at 0,2,4,6,12 and 24h post-operatively. Severity of sore throat was also significantly lower in both groups at all time points. A statistically significant increase in heart rate, systolic and diastolic blood pressure was noted in ketamine group, post nebulisation. Conclusion: Pre-operative dexmedetomidine nebulisation can be utilised as a safe and ideal alternative to ketamine nebulisation in attenuating POST, with less haemodynamic derangement.

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