Argon plasma coagulation therapy for hemorrhagic radiation proctosigmoiditis

Area of Science:

• Gastroenterology
• Oncology
• Medical Devices

Background:

• Radiation-induced proctosigmoiditis is a severe complication of pelvic radiation therapy, often causing difficult-to-manage rectal bleeding.
• Existing treatments like pharmacotherapy are ineffective, and surgery carries high risks.
• Argon plasma coagulation (APC) offers a novel noncontact electrocoagulation method suitable for large bleeding areas.

Purpose of the Study:

• To evaluate the efficacy and safety of argon plasma coagulation (APC) for treating hemorrhagic radiation-induced proctosigmoiditis.
• To assess the impact of APC on rectal bleeding severity and patient hemoglobin levels.

Main Methods:

• A study involving 28 patients with hemorrhagic radiation-induced proctosigmoiditis treated with APC between December 1996 and March 1998.
• Indications for treatment included anemia or persistent bleeding despite pharmacotherapy.
• APC was applied with a standardized argon flow (1.5 L/min) and electrical power (50 W), with bleeding severity graded and hemoglobin levels monitored.

Main Results:

• A total of 82 sessions were performed, with a median of 2.9 sessions per patient.
• Rectal bleeding severity significantly decreased in all but two patients, with the mean score dropping from 2.96 to 0.68.
• Average hemoglobin levels increased by 1.2 gm/dL, with anemic patients showing a 1.9 gm/dL increase. No serious complications were reported.

Conclusions:

• Argon plasma coagulation (APC) is a simple, safe, and effective treatment for hemorrhagic radiation-induced proctosigmoiditis.
• APC offers a promising alternative for patients with refractory rectal bleeding post-radiation therapy.