What is Argon Plasma Coagulation (APC)?
Argon Plasma Coagulation (APC) is a minimally invasive endoscopic procedure used to control bleeding in the gastrointestinal (GI) tract and remove abnormal tissue. It uses a jet of ionized argon gas to deliver precise thermal energy to affected areas, effectively coagulating (cauterizing) blood vessels and destroying abnormal growths without direct contact.
When is APC Recommended?
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Gastrointestinal bleeding from ulcers, tumors, or vascular lesions
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Angiodysplasia (abnormal blood vessels) in the stomach, intestines, or colon
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Radiation proctopathy (bleeding caused by radiation therapy)
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Esophageal and gastric antral vascular ectasia (GAVE), also known as “watermelon stomach”
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Removal of residual tissue after polypectomy (polyp removal)
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Palliation of tumors to reduce obstruction in the digestive tract
How is Argon Plasma Coagulation (APC) Performed?
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Preparation:
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The patient must fast for 6–8 hours before the procedure.
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A sedative or anesthesia is administered to ensure comfort.
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Endoscopic Guidance:
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A thin, flexible endoscope with a camera is inserted through the mouth or rectum to reach the affected area.
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Application of Argon Plasma:
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A special catheter delivers argon gas to the targeted lesion.
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A low-energy electrical current is applied to ionize the gas, generating controlled thermal energy that cauterizes the tissue.
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Completion & Recovery:
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The procedure typically takes 15–30 minutes.
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Patients are monitored for a short period and can usually resume normal activities the next day.
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Mild discomfort or bloating may occur, but it resolves quickly.
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Benefits of Argon Plasma Coagulation (APC)
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Non-contact, precise treatment with minimal damage to surrounding tissues
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Effective for stopping GI bleeding and reducing recurrence
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Minimally invasive and quick recovery
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Can be repeated if necessary for chronic conditions