PMID: 2126250Nov 1, 1990Paper

Colonic concentrations of hydrogen and methane following colonoscopic preparation with an oral lavage solution

Gastrointestinal Endoscopy
A StrocchiM D Levitt

Abstract

Explosions are a rare complication of electrocautery in the colon. The cause of these explosions is ignition of gas containing hydrogen (greater than 4%) or methane (greater than 5%), and oxygen. Hydrogen and methane are products of colonic bacterial metabolism. Oral solutions used for colonoscopy preparation are designed to cleanse the colonic lumen but provide no substrate for fermentation reactions. In 52 patients undergoing colonoscopy, gas samples were collected from the right, transverse, and left colon and analyzed for hydrogen, methane, oxygen, and carbon dioxide. The highest hydrogen and methane concentrations were 0.6% and 0.7%, respectively, less than 16% of the explosive level. Oxygen and carbon dioxide concentrations were close to those of air, suggesting that the bulk of colonic gas was air infused during the procedure. We conclude that the concentrations of explosive gases are well below the hazardous levels when oral colonic cleansing solutions and standard colonoscopic procedures are employed.

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Citations

Nov 11, 2009·International Journal of Colorectal Disease·Francesc CasellasF Guarner
Sep 3, 2004·Current Gastroenterology Reports·Andrew R Brown, Jack A DiPalma
Apr 13, 2006·Gastroenterology Nursing : the Official Journal of the Society of Gastroenterology Nurses and Associates·Marcia L Morris
Nov 13, 2009·Indian Journal of Gastroenterology : Official Journal of the Indian Society of Gastroenterology·Avnish Kumar SethPankaj Puri
Feb 19, 2013·Gastrointestinal Endoscopy·John T MapleSarah A Rodriguez
Jun 26, 2012·Clinical Gastroenterology and Hepatology : the Official Clinical Practice Journal of the American Gastroenterological Association·Otto S LinRichard A Kozarek
Jan 1, 1992·Gastrointestinal Endoscopy·D W MonahanF Goldner
Sep 1, 1992·Gastrointestinal Endoscopy·G W StevensonR L Goodacre
Dec 21, 2014·Gut·Jonna JalankaWillem M de Vos
Dec 3, 2015·Gastroenterology Nursing : the Official Journal of the Society of Gastroenterology Nurses and Associates·Geri Nelson, Marcia L Morris
May 1, 2009·Nature Reviews. Gastroenterology & Hepatology·Kaitlin E Occhipinti, Jack A Di Palma
Feb 6, 2017·Gut·Radu BachmannPatrice D Cani
Oct 22, 2020·Cancers·Ioannis KoliarakisJohn Tsiaoussis
Apr 1, 1996·Pediatric Clinics of North America·T J Sferra, L A Heitlinger

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