Use of pressure release valve to prevent colonic injury during colonoscopy
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Cited by (24)
Impact of intraoperative colonoscopy on anastomotic leakage detection and prevention in colorectal anastomosis for rectal cancer
2022, Revista de Gastroenterologia de MexicoMethods of luminal distention for colonoscopy
2013, Gastrointestinal EndoscopyCitation Excerpt :For explosion to occur, there must be a combustible gas (either hydrogen or methane) at potentially explosive levels, sufficient oxygen, and the presence of a heat source. Hydrogen and methane are produced by fermentation of nonabsorbable (eg, lactulose, mannitol) or incompletely absorbed (eg, lactose, fructose, sorbitol) carbohydrates by the colonic flora and are potentially explosive at levels of 4% (hydrogen) and 5% (methane).31 Adequate bowel preparation with polyethylene glycol has been associated with very low levels of hydrogen and methane, and colonic insufflation and suction during colonoscope advancement will also serve to dilute or remove any pockets of these gases.32
Suture marker lesion detection in the colon by self-stabilizing and unmodified capsule endoscopes: Pilot study in acute canine models
2013, Gastrointestinal EndoscopyCitation Excerpt :With respect to safety, theoretical considerations of obstruction and perforation do not appear likely from mathematical modeling43 and the limited experimental data (total of 8 acute canine animals), but it should be noted that the prototype capsule has not yet been tested via per-oral ingestion. Specific safety issues addressed in the design of the capsule included designing stabilizing components that exert a safe intraluminal pressure on the wall of the colon45,46; having stabilizing components matching the consistency, weight, and dynamic viscosity of soft human stool47-50; having the mesh of the stabilizing component permeable to liquids and biodegradable; and using superabsorbent polymer granules that can be expelled naturally through the colon even in a fully expanded state. Even when fully expanded, the stabilizing component can be naturally expelled through the colon.
A retrospective analysis of cecal barotrauma caused by colonoscope air flow and pressure
2005, Gastrointestinal EndoscopyCitation Excerpt :At 80 mm Hg, this flow rate is 1.46 L/m. Thus, this value is the statistical minimum volume of air the colon must leak at 80 mm Hg so that it will not continue to expand and rupture. By using the maximum sustained intraluminal pressure of 58 mm Hg observed by Kozarek and Sanowski,6 the safe line in Figure 4 demonstrates that the patients in their study had to be capable of expelling air at a predicted minimum rate of 1.64 L/m or their PTIP would have risen. FOUT occurs via a combination of pathways: back through the accessory (biopsy) channel of the colonoscope, through the ileal cecal valve, per anus, and by absorption of nitrogen.
Subcutaneous emphysema following PEG
1991, Gastrointestinal EndoscopyColonoscopic decompression of pseudo-obstruction and volvulus
1989, Surgical Clinics of North America