NCT01865916

Brief Summary

This study is a randomized, controlled, single centre, endoscopist-blinded non-inferiority trial. The purpose of our study is to determine if using a 2-litre mixture in combination with vitamin C is better than using 2 litres of mixture with bisacodyl tablets. Two-litre PegLyte based preparations with an added laxative agent are commonly used for colonoscopies in outpatient settings. If the investigators discover that a 2-litre mixture with either the tablets or the ascorbic acid work better, future patients undergoing colonoscopy will be able to experience fewer side effects and be less troubled by the preparation while still allowing a good view of the colon.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
309

participants targeted

Target at P75+ for phase_4

Timeline
Completed

Started Apr 2013

Typical duration for phase_4

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2013

Completed
1 month until next milestone

First Submitted

Initial submission to the registry

May 13, 2013

Completed
18 days until next milestone

First Posted

Study publicly available on registry

May 31, 2013

Completed
2.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2015

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2016

Completed
Last Updated

June 20, 2016

Status Verified

June 1, 2016

Enrollment Period

2.7 years

First QC Date

May 13, 2013

Last Update Submit

June 16, 2016

Conditions

Outcome Measures

Primary Outcomes (1)

  • Bowel cleansing efficacy as rated by a Boston Bowel Preparation Scale score of greater than 8

    The BBPS is a relatively new, validated scoring system assessing cleanliness of three segments of the colon (left colon, transverse, and right colon). The total is a 10 point scale (0-9) that grades each segment of the colon from 0-3. A segment score of 0 describes: 'unprepared colon segment with mucosa not well seen due to solid stool that cannot be cleared'. Segment score 1: 'portion of mucosa of the colon segment seen, but other areas of the colon are not well seen due to staining, residual stool and/or opaque liquid'. Segment score 2: 'minor amount of residual staining, small fragments of stool and/or opaque liquid, but mucosa of colon segment seen well'. Segment score 3: 'entire mucosa of the colon segment seen well with no residual staining, small fragments of stool and/or opaque liquid'. In this study, we define an excellent equivalent BBPS score as 8 or 9. Scores of 7 or above are generally felt to provide a good visualization of the colon.

    20 hours

Secondary Outcomes (1)

  • Patient tolerability to each 2L product

    20 hours

Study Arms (2)

2 Liters Bi-Peglyte

ACTIVE COMPARATOR

Subjects will be asked to take split dose of 2 Liters PEG + 15mg bisacodyl for bowel preparation the day before colonoscopy.

Drug: Polyethylene Glycol (PEG) and 15 mg Bisacodyl

2 Liters Moviprep

EXPERIMENTAL

Subject will be asked to take split dose of 2 Liters PEG + ascorbic acid for bowel preparation the day before colonoscopy

Drug: Polyethylene Glycol (PEG) + ascorbic acid

Interventions

Subjects will be asked to take split dose of 2L PEG and 3 tablets of 5 mg Bisacodyl

Also known as: Bi-Peglyte
2 Liters Bi-Peglyte

Subjects will be asked to take split dose of 2L PEG and vitamin C

Also known as: Moviprep
2 Liters Moviprep

Eligibility Criteria

Age19 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • All adults (≥ 19 years of age) who are referred to St. Paul's Hospital for outpatient colonoscopy will be included in our study.

You may not qualify if:

  • those with constipation,
  • suspected or known small bowel obstruction,
  • severe inflammatory bowel disease, and
  • any history of colonic resection.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

GI Clinic, St. Paul's Hospital

Vancouver, British Columbia, V6Z 2K5, Canada

Location

Related Publications (7)

  • Beck DE, Harford FJ, DiPalma JA. Comparison of cleansing methods in preparation for colonic surgery. Dis Colon Rectum. 1985 Jul;28(7):491-5. doi: 10.1007/BF02554091.

    PMID: 4017808BACKGROUND
  • American Society of Colon and Rectal Surgeons (ASCRS); American Society for Gastrointestinal Endoscopy (ASGE); Society of American Gastrointestinal and Endoscopic Surgeons (SAGES); Wexner SD, Beck DE, Baron TH, Fanelli RD, Hyman N, Shen B, Wasco KE. A consensus document on bowel preparation before colonoscopy: prepared by a task force from the American Society of Colon and Rectal Surgeons (ASCRS), the American Society for Gastrointestinal Endoscopy (ASGE), and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES). Surg Endosc. 2006 Jul;20(7):1147-60. doi: 10.1007/s00464-006-0152-y. Epub 2006 Jun 8. No abstract available.

    PMID: 16763922BACKGROUND
  • Hsu CW, Imperiale TF. Meta-analysis and cost comparison of polyethylene glycol lavage versus sodium phosphate for colonoscopy preparation. Gastrointest Endosc. 1998 Sep;48(3):276-82. doi: 10.1016/s0016-5107(98)70191-9.

    PMID: 9744604BACKGROUND
  • Curran MP, Plosker GL. Oral sodium phosphate solution: a review of its use as a colorectal cleanser. Drugs. 2004;64(15):1697-714. doi: 10.2165/00003495-200464150-00009.

    PMID: 15257632BACKGROUND
  • Vanner SJ, MacDonald PH, Paterson WG, Prentice RS, Da Costa LR, Beck IT. A randomized prospective trial comparing oral sodium phosphate with standard polyethylene glycol-based lavage solution (Golytely) in the preparation of patients for colonoscopy. Am J Gastroenterol. 1990 Apr;85(4):422-7.

    PMID: 2183591BACKGROUND
  • Frommer D. Cleansing ability and tolerance of three bowel preparations for colonoscopy. Dis Colon Rectum. 1997 Jan;40(1):100-4. doi: 10.1007/BF02055690.

    PMID: 9102248BACKGROUND
  • Davis GR, Santa Ana CA, Morawski SG, Fordtran JS. Development of a lavage solution associated with minimal water and electrolyte absorption or secretion. Gastroenterology. 1980 May;78(5 Pt 1):991-5.

    PMID: 7380204BACKGROUND

MeSH Terms

Interventions

Polyethylene GlycolsBisacodylAscorbic AcidMoviPrep

Intervention Hierarchy (Ancestors)

Ethylene GlycolsGlycolsAlcoholsOrganic ChemicalsPolymersMacromolecular SubstancesBiomedical and Dental MaterialsManufactured MaterialsTechnology, Industry, and AgricultureCresolsPhenolsBenzene DerivativesHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsSugar AcidsAcids, AcyclicCarboxylic AcidsHydroxy AcidsCarbohydrates

Study Officials

  • Robert Enns, MD, FRCP

    University of British Columbia

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
NONE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 13, 2013

First Posted

May 31, 2013

Study Start

April 1, 2013

Primary Completion

December 1, 2015

Study Completion

February 1, 2016

Last Updated

June 20, 2016

Record last verified: 2016-06

Locations