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Clinical Evaluation of Water Immersion Colonoscopy Insertion Technique

This study has been completed.
Information provided by (Responsible Party):
Roy Soetikno, VA Palo Alto Health Care System Identifier:
First received: May 1, 2008
Last updated: March 20, 2017
Last verified: March 2017
Recent studies indicate that infusing 300 milliliters of water (in lieu of air) into the rectum and left colon through the colonoscope as it is being inserted during a colonoscopy examination can allow easier endoscope advancement. This method may prevent stretching of the colon, and ultimately reduce pain induced during colonoscopy. Improvements in patient comfort and cooperation, may increase the efficiency and success rate of complete colonoscopy. The purpose of the study is to test the efficacy of the water immersion technique in patients colonoscopy.

Condition Intervention
Digestive System
Gastrointestinal Disease
Procedure: water immersion colonoscopy
Procedure: standard air colonoscopy

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Participant
Primary Purpose: Diagnostic
Official Title: Clinical Evaluation of Water Immersion Colonoscopy Insertion Technique

Resource links provided by NLM:

Further study details as provided by Roy Soetikno, VA Palo Alto Health Care System:

Primary Outcome Measures:
  • Colonoscopy Success With Minimal Sedation [ Time Frame: At the time of the procedure ]

Secondary Outcome Measures:
  • Time to Cecum [ Time Frame: At the time of the procedure ]
  • Patient Satisfaction [ Time Frame: At the time of the procedure ]
    Patient satisfaction was measured on a scale of 1 (best) to 7 (worst).

Enrollment: 229
Study Start Date: September 2007
Study Completion Date: June 2008
Primary Completion Date: June 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Water Immersion Colonoscopy
Water Immersion Colonoscopy
Procedure: water immersion colonoscopy
instillation of 300cc of water in the rectum
Active Comparator: Standard Air Colonoscopy
Standard Air Colonoscopy
Procedure: standard air colonoscopy
air instillation in colon for visualization


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • presentation for colonoscopy
  • male
  • age 18 or older

Exclusion Criteria:

  • women
  • known inflammatory bowel disease
  • presentation for emergency colonoscopy
  • history of partial colectomy
  • chronic narcotic or benzodiazepine use
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00671177

United States, California
VA Palo Alto Health Care System
Palo Alto, California, United States, 94304
Sponsors and Collaborators
VA Palo Alto Health Care System
Principal Investigator: Roy Soetikno, MD, MS VA Palo Alto/Stanford University Medical Center
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Roy Soetikno, Clinical Professor, VA Palo Alto Health Care System Identifier: NCT00671177     History of Changes
Other Study ID Numbers: Protocol10642
Study First Received: May 1, 2008
Results First Received: January 17, 2017
Last Updated: March 20, 2017
Individual Participant Data  
Plan to Share IPD: No

Keywords provided by Roy Soetikno, VA Palo Alto Health Care System:
diagnostic techniques
digestive system

Additional relevant MeSH terms:
Gastrointestinal Diseases
Digestive System Diseases processed this record on May 25, 2017