Ultrasonographic evaluation of gastric emptying and correlation of bowel preparation quality with different waiting times in patients undergoing colonoscopy with sedation: A randomized controlled clinical trial
Authors' conclusion
Performing colonoscopy 2 h after 3 L split-dose OSS intake does not increase the risk of intraoperative regurgitation or aspiration as assessed by ultrasound in this selected, low-risk population. Colonoscopy performed within 2-4 h after bowel preparation completion yields superior bowel preparation quality compared to 4-6 h.
Study context
- Population
- Patients receiving colonoscopy with sedation, endoscopy center
- Participants
- 134 patients
- Comparison
- Group A vs Group B
- Primary endpoint
- Full stomach rate at various timepoints (gastric US) and bowel preparation quality
Methodological detailsprospective
- Prospective
Primary result
As reported in the abstract
Group A
7.0
range (as printed) 6.0–8.0
Group B
6.0
range (as printed) 5.0–7.0
P < 0.001
Secondary outcomes
| Outcome | Group A | Group B | P value |
|---|---|---|---|
| Patient satisfaction | 10.0 (range (as printed) 8.0–10.0) | 8.0 (range (as printed) 7.0–9.0) | P < 0.001 |
Original publication
Ultrasonographic evaluation of gastric emptying and correlation of bowel preparation quality with different waiting times in patients undergoing colonoscopy with sedation: A randomized controlled clinical trial. J Clin Anesth. Published 8 March 2026. doi:10.
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