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Peppermint Oil to Improve Visualization in Screening Colonoscopy: A Randomized Controlled Clinical Trial
Ishani Shah1, Noemi J Baffy2, Jennifer L Horsley-Silva2
1Department of Internal Medicine, Creighton University St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA.
Gastroenterology Research
|June 26, 2019
Summary
Topical peppermint oil significantly reduced colon spasticity during screening colonoscopy, potentially improving bowel visualization. While adenoma detection rates were higher with peppermint oil, further research with larger sample sizes is needed.
Area of Science:
- Gastroenterology
- Endoscopy
- Pharmacology
Background:
- Screening colonoscopy reduces colorectal cancer mortality through early detection.
- Colon peristalsis and spasm can impair visualization during colonoscopy.
- Topical peppermint oil may relax smooth muscles, decreasing peristalsis.
Purpose of the Study:
- To evaluate the efficacy of peppermint oil in reducing colonic spasticity.
- To determine if peppermint oil improves bowel visualization during screening colonoscopy.
Main Methods:
- A randomized, double-blind, placebo-controlled trial was conducted.
- Patients received either peppermint oil or placebo via the colonoscope's working channel.
- Colonic peristalsis, spasticity, bowel visibility, bowel preparation quality, withdrawal time, and adenoma detection rate (ADR) were assessed.
Main Results:
- Peppermint oil significantly reduced colonic spasticity (P=0.05).
- Cecal intubation time was shorter with peppermint oil (P=0.04).
- While ADR was higher in the peppermint oil group, it did not reach statistical significance.
Conclusions:
- Topical peppermint oil appears to reduce bowel wall spasticity, potentially enhancing visualization during colonoscopy.
- Larger studies and alternative administration methods are recommended to confirm findings and improve ADR.
- Peppermint oil shows promise as an adjunct to improve colonoscopy quality.
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