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The objective of the present study was to test the hypothesis that intravenous morphine titration provides superior analgesia to oral hydrocodone/acetaminophen for patients with lower extremity displaced fracture in an emergency department (ED) setting. A prospective, randomized clinical trial of ED patients suffering acute lower extremity displaced fracture pain was performed with a total of 206 participants included. After application of exclusion criteria, the cohort comprised 166 patients, 85 of which were randomly allocated to the oral hydrocodone/acetaminophen (5 mg/500 mg) group and 81 to the intravenous morphine titration (every 5 min by 3-mg increments) group. The main outcome was the visual analogue scale (VAS) at different time-points after the first dose of analgesic was administered. Secondary outcomes included the VAS change during the skeletal traction operation and short-term adverse events. The results demonstrated that the initial VSA of the participants was similar at the baseline on arrival at the ED (P=0.2582). At the time-points of 5, 15, 30 min after the first dose of analgesic administered, the intravenous morphine titration group exhibited a greater VAS reduction compared with that in the oral hydrocodone/acetaminophen group (P&lt;0.01). The differences between the 2 groups were not statistically significant at 1 h or thereafter. The incidence of short-term adverse events was similar between the 2 groups but sedation, whose incidence in the morphine group was markedly increased, may not be arbitrarily attributed to adverse events. It was concluded that, compared with oral hydrocodone/acetaminophen, intravenous morphine titration provided a rapid and sufficient pain relief and equivalent short-term adverse events for patients with lower extremity displaced fracture in an ED setting.

experimental and therapeutic medicine

Intravenous morphine titration vs. oral hydrocodone/acetaminophen for adults with lower extremity displaced fracture in an emergency department setting: A randomized controlled trial