the evaluation of effects two different doses of hydrocortisone on the intensity of perioperative shivering in elective surgery under spinal anesthesia: a double-blind randomized controlled trial study

background: post? and intra?operative  shivering is one of the most complications of spinal anesthesia so recommend a suitable drug with at least complications for prevention and control of postoperative shivering. this current study aimed to compare the preventive effect of  hydrocortisone on intra? and post?operative shivering in patients undergoing surgery with spinal anesthesia. materials and methods: in a clinical trial study, ninety patients who candidate for surgery with spinal anesthesia were selected and randomly divided into three groups. the first and second groups were received 1 mg/kg and 2 mg/kg hydrocortisone, respectively, and the third group was received normal saline, and postoperative shivering was compared between the three groups. results: the investigation of the incidence of inter? and post?operative shivering in patients in the three groups revealed that within the study period, 31 patients suffered from shivering among which 9, 5, and 17 cases were in 1 mg/kg hydrocortisone group, 2 mg/kg  hydrocortisone group, and placebo group, respectively, and according to the chi?square test, the difference among the three groups was significant ( p = 0.004). conclusion: according to the obtained results, the overall conclusion of the study is that using hydrocortisone at least with the dose of 1 mg/kg as a preventive drug reduced the incidence of intra- and post-operative  shivering with spinal anesthesia.