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Does routine intravenous glucagon administration facilitate colonoscopy? A randomized trial
C S Cutler1, D K Rex, R H Hawes
1Department of Medicine, Indiana University School of Medicine, Indianapolis, USA.
Gastrointestinal Endoscopy
|October 1, 1995
Summary
Routine intravenous glucagon (1 mg) does not improve colonoscopy efficiency or yield in experienced endoscopists. Studies found no significant differences in insertion/withdrawal times or spasm severity with glucagon use.
Area of Science:
- Gastroenterology
- Endoscopy
- Pharmacology
Background:
- Previous research on routine glucagon use in colonoscopy yielded inconsistent findings.
- The efficacy of glucagon in improving colonoscopy procedures remains uncertain.
Purpose of the Study:
- To evaluate the effectiveness of routine intravenous glucagon administration in facilitating colonoscopy procedures.
- To determine if glucagon impacts colonoscopy efficiency, spasm, or yield.
Main Methods:
- Two double-blind, randomized studies involving 170 patients undergoing colonoscopy.
- Patients received either 1 mg of intravenous glucagon or a placebo before or after cecal intubation.
- Key metrics recorded included insertion/withdrawal times, spasm, yield, and side effects.
Main Results:
- No significant differences in colonoscope insertion or withdrawal times were observed between glucagon and placebo groups.
- Colonoscopy yield and the presence/severity of colonic spasm did not differ between groups.
- A trend towards increased side effects (nausea, vomiting) was noted with glucagon in one study.
Conclusions:
- Routine intravenous administration of 1 mg glucagon does not facilitate colonoscopy procedures performed by experienced endoscopists.
- Glucagon did not demonstrate benefits in patients with diverticulosis.