Reduction of Post-op Pain and Opioid Consumption With the Addition of Methadone in Total Hip Arthroplasty: a Double-blind Randomized Control Trial
Medical University of South Carolina
Summary
This randomized, double-blind controlled trial investigates whether intraoperative intravenous methadone (0.15 mg/kg based on ideal body weight) reduces acute postoperative pain and opioid consumption in patients undergoing elective total hip arthroplasty under spinal anesthesia with mepivacaine. The primary outcome is patient-reported pain on a visual analog scale (VAS) 30-60 minutes after arrival in the post-anesthesia care unit (PACU). Secondary outcomes include opioid use, pain scores over time, incidence of nausea/vomiting, and quality of recovery. A total of 162 subjects will be enrolled at MUSC surgical sites.
Eligibility
- Age range
- 18–75 years
- Sex
- All
- Healthy volunteers
- No
Inclusion * Ages 18-75 years of age * Undergoing elective primary total hip arthroplasty with mepivacaine in the spinal anesthesia Exclusion * Allergy to methadone or mepivacaine * Severe liver disease defined as Child's Pugh Class C * End stage renal disease requiring dialysis * Known diagnosis of prolonged QT syndrome * Currently pregnant * Unable to provide written, informed consent * Non-English speaking
Interventions
- DrugMethadone
Patients will intraoperatively receive methadone 0.15mg/kg IV, based on ideal body weight.
Location
- Medical University of South CarolinaCharleston, South Carolina