Abstract Title:

Efficacy of peppermint oil as an antispasmodic during endoscopic retrograde cholangiopancreatography.

Abstract Source:

J Gastroenterol Hepatol. 2006 Sep;21(9):1394-8. PMID: 16911682

Abstract Author(s):

Natsuyo Yamamoto, Yousuke Nakai, Naoki Sasahira, Kenji Hirano, Takeshi Tsujino, Hiroyuki Isayama, Yutaka Komatsu, Minoru Tada, Mimoru Tada, Haruhiko Yoshida, Takao Kawabe, Naoki Hiki, Michio Kaminishi, Hanzo Kurosaka, Masao Omata

Article Affiliation:

Department of Gastroenterology, University of Tokyo, Tokyo, Japan.


BACKGROUND: During endoscopic retrograde cholangiopancreatography (ERCP), hyoscine-N-butylbromide (Buscopan) or glucagon is used to inhibit duodenal motility. However, they may cause adverse effects. Peppermint oil has an antispasmodic effect and is used as a less hazardous antispasmodic during colonoscopy and upper gastrointestinal endoscopy. The purpose of the present paper was therefore to investigate peppermint as an antispasmodic for ERCP. METHODS: Forty patients were enrolled prospectively. They were assigned to four groups according to the peppermint oil concentration and site of administration: group 1, 20 mL of 1.6% solution around duodenal papilla; group 2, 20 mL of 1.6% solution both to the antrum of the stomach and around the duodenal papilla; group 3, 20 mL of 3.2% solution around the duodenal papilla; and group 4, 3.2% solution both to the antrum and around the duodenal papilla. Glucagon or hyoscine-N-butylbromide was added when duodenal peristalsis was not adequately diminished. Sixteen patients undergoing ERCP with glucagon were employed as historical controls. RESULTS: The ERCP was attempted in all except one patient in group 2 who had bleeding from invaded tumor to the duodenum. Peppermint administration equally reduced duodenal motility in the groups. Duodenal movement was none or mild in 69.2% of patients. The ERCP was successfully performed with peppermint alone in 91.4% of patients (37/39). Glucagon or hyoscine-N-butylbromide was needed in one patient each in groups 1 and 4. Serious complications related to peppermint oil did not occur. Inhibitory effect of peppermint appears to be identical to that of glucagon. CONCLUSION: Duodenal relaxation was obtained with 20 mL of 1.6% peppermint oil solution in the duodenum, but additional administration may be required. Peppermint oil is useful as an antispasmodic agent for ERCP.

Study Type : Human Study

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