Patel, Parind B Protocol for a randomised control trial of methylnaltrexone for the treatment of opioid-induced constipation and gastrointestinal stasis in intensive care patients (MOTION). [electronic resource] - BMJ open 07 2016 - e011750 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 2044-6055 Standard No.: 10.1136/bmjopen-2016-011750 doi Subjects--Topical Terms: AdultAnalgesics, Opioid--adverse effectsBlood-Brain BarrierConstipation--drug therapyCritical CareFemaleGastrointestinal Motility--drug effectsHumansLaxatives--pharmacologyMaleNaltrexone--analogs & derivativesNarcotic Antagonists--pharmacologyQuaternary Ammonium Compounds--pharmacology