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Argon plasma coagulation

Medical procedure

Field	Value
name	Argon plasma coagulation
synonym	APC
image	Argon plasma coagulation.jpg
caption	Argon plasma coagulation administered via probe through the colonoscope at an angiodysplasia in the colon. The patient had multiple colonic angiodysplasiae in the setting of aortic stenosis.
specialty	Gastroenterology

Argon plasma coagulation (APC) is a medical endoscopic procedure used to control bleeding from certain lesions in the gastrointestinal tract. It is administered during gastrointestinal endoscopy such as esophagogastroduodenoscopy or colonoscopy.

Medical use

APC involves the use of a jet of ionized argon gas (plasma) directed through a probe passed through the endoscope. The probe is placed at some distance from the bleeding lesion, and argon gas is emitted, then ionized by a high-voltage discharge (approx 6kV). High-frequency electric current is then conducted through the jet of gas, resulting in coagulation of the bleeding lesion. As no physical contact is made with the lesion, the procedure is safe if the bowel has been cleaned of colonic gases, and can be used to treat bleeding in parts of the gastrointestinal tract with thin walls, such as the cecum.

References

"Post-Radiation Colitis". El Salvador Atlas of Gastrointestinal Video Endoscopy.
(October 2007). "Colonic gas explosion during therapeutic colonoscopy with electrocautery". World Journal of Gastroenterology.
(November 2004). "Argon plasma coagulation in the treatment of hemorrhagic radiation proctitis is efficient but requires a perfect colonic cleansing to be safe". European Journal of Gastroenterology & Hepatology.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

endoscopy digestive-system-procedures

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