Comparing the Effect of Ketamine and Magnesium Sulfate Gargling With Placebo on Post-operative Sore Throat

Abstract

A prospective randomized double-blind study including patients ASA I-II, aged more than 18 years undergoing surgery under general anesthesia (GA) and endotracheal intubation. Patients were randomized allocated into 2 groups: ketamine group received ketamine gargle (0.5 mg/kg up to 30 ml dextrose water) and magnesium group received magnesium sulfate gargle (20 mg/kg up to 30 mL dextrose water ) 15 minutes before the operation. Our primary outcome is sore throat and the secondary judging criteria are cough, dysphonia and satisfaction. A standardized anesthesia protocol was followed for all patients. After extubation, the patients were asked to grade POST, hoarseness, and cough at 15 min, 1h, and 24 h.

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