Comparison of Dexmedetomidine and Meperidine for the Prevention of Shivering Following Coronary Artery Bypass Graft

Comparison of Dexmedetomidine and Meperidine for the Prevention of Shivering Following Coronary Artery Bypass Graft: Study Protocol of a Randomized Controlled Trial

This study aims to compare the effects of dexmedetomidine and meperidine on the incidence of shivering in patients undergoing CABG.

Shivering is a common complication in the postoperative period. The incidence of shivering has been reported to range from 5% to 65% under general anesthesia and as 33% during epidural anesthesia. Shivering can increase perioperative risk in patients. Both dexmedetomidine and meperidine are effective agents for the prevention of postanesthetic shivering. However, few studies have compared the anti-shivering effects of different agents following coronary artery bypass graft (CABG). This study aims to compare the effects of dexmedetomidine and meperidine on the incidence of shivering in patients undergoing CABG.

Inclusion Criteria:

(1) aged between 18 and 75 years, (2) undergoing elective CABG, (3) ASA grade of II-IV, and (4) in accordance with ethical guidelines, patients must voluntarily participate in the trial and sign the informed consent for the clinical study.

Exclusion Criteria:

(1) patients with neurological or psychiatric disorders, (2) hepatic and renal dysfunction, (3) severe hyperthyroidism or hypothyroidism, (4) a body temperature greater than 38 °C or less than 36 °C, (5) postoperative hemodynamic instability, (6) preoperative use of a left ventricular assistance device, (7) pa severe diabetic complications (diabetic ketoacidosis, hyperosmolar coma, various infections, diabetic nephropathy), (8) participation in other clinical studies within the past 3 months, (9) acute or chronic pain, (10) addiction to opioids, (11) drug abuse, (12) pain management, and (13) neuromuscular disease, (14) on-pump CABG.