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A Study to Examine Levels of Sedation During Outpatient Colonoscopies

This study has been completed.
Information provided by (Responsible Party):
Baylor Research Institute Identifier:
First received: January 31, 2008
Last updated: June 9, 2017
Last verified: June 2017
Examine levels of sedation required for patients to comfortably undergo colonoscopy using propofol and if adjunct monitoring equipment promotes patient safety.

Outpatient Colonoscopy

Study Type: Observational
Official Title: A Prospective, Blinded Study Examining Sedation Levels During Outpatient Colonoscopies

Resource links provided by NLM:

Further study details as provided by Baylor Research Institute:

Primary Outcome Measures:
  • Examine possible relationships (correlations) between sedation using the SEDLine monitors and level of sedation using the Ramsay Sedation Scale and examine the number and type of airway interventions and clinical signs performed during the procedure. [ Time Frame: 2 years ]

Enrollment: 100
Study Start Date: March 2006
Study Completion Date: December 2006
Primary Completion Date: December 2006 (Final data collection date for primary outcome measure)
Blinded Group
SEDline output is unknown to anesthesiologist.
Unblinded Group
SEDline output is known to anesthesiologist.

Detailed Description:

Propofol for sedation during outpatient endoscopy has become a popular technique in place of midazolam and opioid sedation. It has been associated with improved patient satisfaction and a faster recovery with less nausea and vomiting. However, there are a number of potential adverse effects associated with propofol. It has no analgesic effects; therefore, when used for moderate sedation procedures it frequently has to provide deeper levels of sedation to allow a painful procedure to be performed.

Some patients are sedated to the level of general anesthesia and may develop respiratory depression or airway obstruction requiring immediate airway support.

We examined the level of sedation required for patients to comfortably undergo routine colonoscopy using propofol and what monitoring system would best predict the patients who might need an airway intervention.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Study Population
Outpatient GI clinic

Inclusion Criteria:

  • Greater than 18 years of age
  • ASA classification of I, II, or III

Exclusion Criteria:

  • Anesthesiologist plans to use a combination of medications other than propofol for sedation.
  • ASA classification IV or higher
  • Lesions on forehead or earlobes
  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: NCT00614263

United States, Texas
Baylor University Medical Center - Department of Anesthesiology
Dallas, Texas, United States, 75246
Sponsors and Collaborators
Baylor Research Institute
Principal Investigator: Michael Ramsay, MD Baylor Research Institute
  More Information

Responsible Party: Baylor Research Institute Identifier: NCT00614263     History of Changes
Other Study ID Numbers: 006-005
Study First Received: January 31, 2008
Last Updated: June 9, 2017

Keywords provided by Baylor Research Institute:
Sedation levels processed this record on August 22, 2017