Related Experiment Video
Updated: Jun 2, 2026

E-Patient Counseling Trial (E-PACO): Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
Published on: August 1, 2019
Deep sedation compared with moderate sedation in polyp detection during colonoscopy: a randomized controlled trial
G A Paspatis1, G Tribonias, M M Manolaraki
1Department of Gastroenterology Anesthesiology, Benizelion General Hospital, University of Crete, Heraklion-Crete, Greece. paspati@admin.teiher.gr
Deep sedation and moderate sedation showed no significant difference in polyp detection rates during colonoscopy. This finding suggests similar efficacy for adenoma detection regardless of sedation depth.
Area of Science:
- Gastroenterology
- Endoscopy
- Sedation Medicine
Background:
- Adenoma detection rate is a key quality indicator for colonoscopy.
- Sedation methods can influence patient comfort and procedure outcomes.
Purpose of the Study:
- To compare the polyp detection performance of colonoscopy under deep sedation versus moderate sedation.
- To evaluate secondary outcomes including patient and endoscopist satisfaction, recovery time, and adverse events.
Main Methods:
- Prospective randomized study of 520 patients undergoing colonoscopy.
- Patients were assigned to either deep sedation (n=258) or moderate sedation (n=262).
- Sedation and analgesia administered using midazolam and pethidine in both groups.
Main Results:
- No significant difference in overall polyp detection rates between deep and moderate sedation groups (P=0.67).
- No significant difference in detecting polyps ≥ 10 mm (P=0.30) or < 10 mm (P=0.83).
- Adenoma detection rates were also comparable between the two sedation groups (P=0.99).
Conclusions:
- Deep sedation and moderate sedation yield similar polyp and adenoma detection rates in colonoscopy.
- Sedation depth does not appear to be a significant factor in colonoscopic polyp detection efficacy.
Related Concept Videos
Endoscopic Procedures II: Colonoscopy
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and solid...
Endoscopic Procedures I: Esophagogastroduodenoscopy
During an EGD, the endoscope can be used to:
Stages of General Anesthesia
Lower GI Series: Barium Enema
Procedure Details
The examination begins by inserting a lubricated rectal tube into the patient's rectum to administer a radiopaque barium solution. The barium flow is carefully...