Lubiprostone (Amitiza®) Vs. Standard Care in Opioid-induced Constipation After Surgery in Inpatient Rehabilitation
Patients requiring opioids for post-operative pain control following elective orthopedic procedures which has resulted in constipation symptoms, and who are in inpatient rehabilitation will be randomized to two different treatment arms: lubiprostone or senna. Baseline scores regarding constipation and a quality of life bowel questionnaire will be compared the day following 6 days of treatment intervention.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Lubiprostone (Amitiza®) Compared to Standard Care in the Treatment of Postoperative Opioid-induced Constipation in Inpatient Rehabilitation Patients Following Orthopedic Procedures|
- Change in Patient Assessment of Constipation (PAC) - Symptoms (Sym) [ Time Frame: Baseline and Day 7, after treatment completed (6 days of treatment) ] [ Designated as safety issue: No ]Patient Assessment of Constipation (PAC) - Change in this measure was assessed. The PAC has previously been found to be a valid and reliable way to measure constipation symptoms and clinical course. The PAC has two components. The symptom (SYM) component is composed of 12 items with score range 0-4 with lower scores indicating improvement. Scores within the two domains were separately averaged. The PAC-SYM questionnaire has shown good concurrent and clinical validity for opioid-induced constipation in a number of pain populations and has demonstrative responsiveness to treatment. There are three symptom domains within the PAC-SYM: Abdominal symptoms (4 items), rectal symptoms (3 items) and stool symptoms (5 items).
- Change in Patient Assessment of Constipation - Quality of Life [ Time Frame: Baseline and day 7 ] [ Designated as safety issue: No ]The second component of the PAC is the quality of life (QOL) component.The quality of life (QOL) component consists of five items that are rated on a 0-4 scale with higher scores indicating better QOL. Scores within the domains are averaged.
|Study Start Date:||April 2008|
|Study Completion Date:||October 2011|
|Primary Completion Date:||October 2011 (Final data collection date for primary outcome measure)|
Experimental: Lubiprostone and placebo Senna
Lubiprostone (Amitiza) 24 µg po BID given with meals for 6 days with two tabs placebo Senna at noon
24 µg po BID given with meals for 6 days
Other Name: Amitiza
Active Comparator: Senna active plus Lubiprostone Placebo
Senna 2 tabs daily for 6 days at noon and placebo Lubiprostone 1 Cap BID
2 tabs daily for 6 days
Other Name: Sennasides 8.6 mg each tab
The purpose of this study is to assess the efficacy of Lubiprostone (Amitiza) compared to standard care for the treatment of constipation in orthopedic patients receiving opioids for pain control during inpatient rehabilitation. Lubiprostone (Amitiza®) is a locally acting chloride channel activator that increases intestinal fluid, and thus increases intestinal motility. It has been approved for chronic constipation, but not in the setting of opioid-induced constipation. Senna is a stimulant laxative that increases propulsive peristaltic activity of the colon through local effects on the mucosa.
Subjects will be compared using from the Patient Assessment of Constipation (PAC) which has previously been found to be a valid and reliable way to measure constipation symptoms and clinical course. (Frank, Kleinman et al. 1999) as well as with other measures of bowel-related symptoms and functional outcomes.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00662363
|United States, Illinois|
|Rehabilitation Institute of Chicago|
|Chicago, Illinois, United States, 60302|
|Principal Investigator:||Christina M Marciniak, MD||Rehabilitation Institute of Chicago|