ArticleThe journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG2024
Clinical Outcomes of Intravenous Methylnaltrexone in Children: A Single-Arm Retrospective Cohort Study.
Article in The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesConstipation is a common adverse event of opioid use that is often difficult to treat. Methylnaltrexone is a therapeutic option for opioid-induced constipation (OIC) approved for oral and subcutaneous use in adults. These administration routes are not always feasible in the pediatric population. The primary objective of this research was to quantify the response rate of methylnaltrexone in pediatric patients when it was administered via the intravenous (IV) route.
methodsThis retrospective study evaluated patients ages <18 years who received IV methylnaltrexone between January 1, 2013, and June 30, 2020, for OIC. Efficacy was evaluated through documentation of bowel evacuation within 4 hours of methylnaltrexone administration. Adverse events observed within 24 hours of administration were attributed to methylnaltrexone.
resultsMethylnaltrexone was administered to 134 unique patients during the study period. Of these, 46 met exclusion criteria, resulting in 88 patients being included in the study. Patients with an underlying hematology/oncology diagnosis consisted of 77% of the study population, and 23% of patients had an -underlying medical/surgical diagnosis. The response rate to IV methylnaltrexone was 25% (CI, 16-34).
conclusionsThe results of this retrospective chart review demonstrate the potential role of IV methylnaltrexone in the pediatric population. Despite the overall lower response rate relative to that reported in adults, IV methylnaltrexone possesses a unique mechanism of action that may serve as an alternative treatment option for patients unable to use the oral and subcutaneous administration routes. There were no significant adverse events seen in the study.
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