A Randomized, Placebo-Controlled Study to Evaluate the Efficacy of Perioperative Dextromethorphan compared to Placebo for the Treatment of Postoperative Pain
There is extensive preclinical evidence that dextromethorphan has an analgesic effect in patients with pain of traumatic origin. The primary objective is to of this study is to evaluate the efficacy of perioperative dextromethorphan compared to placebo for postoperative pain in patients undergoing total knee arthroplasty (TKA). This is a single-institution, multi-dose, randomized, placebo-controlled, trial to evaluate the efficacy of perioperative dextromethorphan compared to placebo for postoperative pain in patients undergoing TKA. Male and/or female patients will be randomized to either dextromethorphan treatment group (n = 80) or placebo group (n= 80). Patients will receive 60 mg oral dextromethorphan (or matching placebo) preoperatively, as well as 30 mg 8- and 16-hours postoperatively.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
160
PO
Keck School of Medicine of USC
Los Angeles, California, United States
RECRUITINGPost-op opioid use
Time frame: 24 hours
Subjective pain
numeric rating scale (NRS) or visual analog scale (VAS)
Time frame: preoperatively and 6, 12, 24, and 48 hours postoperatively
Postoperative opioid consumption
Time frame: at 48 hours
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