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Anissian, Lucas; Schwartz, Harry W.; Vincent, Kevin; Vincent, Heather K.; Carpenito, Jennifer; Stambler, Nancy; Ramakrishna, Tage
Journal of hospital medicine, February 2012, Letnik: 7, Številka: 2Journal Article
BACKGROUND: Methylnaltrexone has been shown to be effective for treating opioid‐induced constipation (OIC) in chronic settings, but its effects on acute OIC have not been studied. OBJECTIVE: To assess safety and efficacy of subcutaneous methylnaltrexone in patients with acute OIC after orthopedic procedures. DESIGN: Double‐blind, randomized, parallel‐group, placebo‐controlled, hypothesis‐generating phase 2 study. SETTING: Sixteen US hospitals and rehabilitation facilities. PATIENTS: Adult patients with acute OIC after orthopedic surgical procedure, expected to require opioids for at least 7 days postrandomization. INTERVENTIONS: Patients received once‐daily subcutaneous methylnaltrexone 12 mg or placebo for up to 4 or 7 days. MEASUREMENTS: All endpoints were exploratory and included the percentage of patients achieving laxation within 2 and 4 hours of first dose and time to laxation. RESULTS: Thirty‐three patients received at least 1 dose of study drug (methylnaltrexone, n = 18; placebo, n = 15). Within 2 and 4 hours, significantly more patients receiving methylnaltrexone achieved laxation (2 hours: 33.3% vs 0%, P = 0.021; 4 hours: 38.9% vs 6.7%, P = 0.046) compared with placebo. Time to laxation was significantly shorter with methylnaltrexone (median = 15.8 hours) versus placebo (median = 50.9 hours), P = 0.0197. The most common adverse events related to the gastrointestinal tract. Pain scores remained stable and were similar to those of placebo, and signs and symptoms of opioid withdrawal did not emerge in patients receiving methylnaltrexone. CONCLUSIONS: Methylnaltrexone was generally well tolerated and was active in inducing laxation in this study of patients experiencing acute OIC following orthopedic surgery. Journal of Hospital Medicine 2012. © 2011 Society of Hospital Medicine.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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