Transdermal Fentanyl and Melatonin Patches for Postoperative Pain Relief

Seventy five patients, aged 18-50 years, ASA I and II undergoing elective single level lumber laminectomy under general anesthesia were included in this randomized controlled double-blind study. Patients were randomly divided into 3 groups 25 each, C group patients received transdermal placebo patch, TDF group (50μg/h) and TDM group (7 mg). Assessment of postoperative pain, sedation, hemodynamic variables such as HR and MAP, postoperative monitoring of arterial SpO2 and side effects (e.g. nausea, vomiting, pruritis, respiratory depression and hemodynamic instability) were done 30 minutes, 1, 2, 6 and 12 hours postoperatively. Postoperative Patient's and Surgeons' satisfaction, Intraoperative bleeding and plasma cortisol (µg / dl) postoperatively were also assessed.