the effect of intravenous ketamine and pethidine on the incidence of shivering in patients undergoing tonsillectomy surgery: a double-blind randomized clinical trial study

Background: postoperative shivering is a common complication after general anesthesia. given that shivering is an unpleasant feeling and experience for the patient, its prevention is of particular importance for the treatment team. despite the use of various medications, postoperative shivering is still seen with high prevalence. method: in this double-blind randomized clinical trial study, 224 patients undergoing tonsillectomy surgery with asa i and ii who were hospitalized in shahid mohammadi hospital, bandar abbas in 2024 were included in the study. the patients were divided into three groups using a random number table; ketamine, pethidine, and control. the volume of the syringe for administering the drugs was the same in all three groups. after extubation, the incidence of shivering in recovery was assessed and recorded by the anesthesiologist. results: the obtained results show that compared to others, divorced teenagers had significantly higher fear, behavioral avoidance, social avoidance, physiological discomfort and total social anxiety index. there was no statistically significant difference between obsessive beliefs and its factors in divorced teenagers and others.conclusion: the results of the present study showed that the use of pethidine showed better performance in reducing side effects by significantly reducing the incidence of shivering. these findings emphasize that the appropriate choice of drug can help improve the patient experience and reduce unpleasant complications after surgery.