Clinical Research Directory

Comparative Dose-Response of Intrathecal Dexmedetomidine for Post-Spinal Shivering

Dexmedetomidine, a highly selective α2-adrenergic agonist, when used intrathecally as an adjuvant to local anesthetics, prolongs sensory/motor block and may blunt thermoregulatory shivering mechanisms. Several randomized controlled trials and meta-analyses have demonstrated decreased shivering incidence with intrathecal dexmedetomidine, but reported doses vary (commonly 2.5, 5, and 10 µg, and in some trials up to 15-20 µg), and the balance between efficacy and adverse effects (sedation, bradycardia, and hypotension) is not fully established. Hence, a head-to-head randomized comparison of several low-to-moderate intrathecal doses is warranted. Objective: to compare the safety and efficacy of three intrathecal dexmedetomidine doses (2.5 µg, 5 µg, 10 µg) versus placebo for the prevention of post-spinal shivering.

Efficacy of Oral Ondansetron Strips on Prevention of Post-Spinal Shivering

This study aims to investigate the efficacy of oral ondansetron film strips on the incidence of post-spinal shivering in patients undergoing surgeries using spinal anesthesia at Kasr Alainy hospitals, Cairo University. This prospective, double-blinded, randomized controlled study will be conducted on 50 patients aged from 18 to 65 years of both sexes with ASA I, II who are scheduled for elective surgical procedures under spinal anesthesia in the lower half of the body such as orthopedic, urological, or general surgeries. Patients will be divided into two equal groups: Group (O) will receive oral ondansetron in the form of an oral soluble film 4 mg strip immediately before insertion of IV cannula and group (C) will receive a placebo in the form of an oral peppermint strip immediately before insertion of the IV cannula.