Conditions: Post-Operative Ileus (POI)
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 524
Healthy volunteers: no

Brief summary:
To evaluate the safety and efficacy of MNTX in participants who have undergone segmental colectomy and to assess if the time between the end of surgery and the first bowel movement is significantly shorter in the MNTX regimen than the equivalent assessment using a placebo regimen.

Detailed description:

Arms:
arm 1: Participants will receive methylnaltrexone (MNTX) 12 milligrams (mg) as an intravenous (IV) infusion over approximately 20 minutes for every 6 hours until one of the following occurs: 1) 24 hours elapsed after the first bowel movement and the participant was tolerating clear liquids, 2) the participant was discharged from the hospital, or 3) a maximum of 10 days elapsed. The first dose of study drug will be administered within the first 90 minutes after the end of surgery (defined as the time when the last skin suture or staple is placed in the participant). arm 2: Participants will receive MNTX 24 mg as an IV infusion over approximately 20 minutes for every 6 hours until one of the following occurs: 1) 24 hours elapsed after the first bowel movement and the participant was tolerating clear liquids, 2) the participant was discharged from the hospital, or 3) a maximum of 10 days elapsed. The first dose of study drug will be administered within the first 90 minutes after the end of surgery (defined as the time when the last skin suture or staple is placed in the participant). arm 3: Participants will receive placebo matching to MNTX as an IV infusion over approximately 20 minutes for every 6 hours until one of the following occurs: 1) 24 hours elapsed after the first bowel movement and the participant was tolerating clear liquids, 2) the participant was discharged from the hospital, or 3) a maximum of 10 days elapsed. The first dose of study drug will be administered within the first 90 minutes after the end of surgery (defined as the time when the last skin suture or staple is placed in the participant).

Interventions: intervention 1: Methylnaltrexone intervention 2: Placebo
Intervention descriptions: intervention 1: Methylnaltrexone will be administered as per the dose and schedule specified in the respective arms. intervention 2: Placebo matching to methylnaltrexone will be administered as per the schedule specified in the respective arm.

Protocol document: