A CASE OF INTRAARTERIAL INFUSION OF VASOPRESSIN FOR MASSIVE BLEEDING FROM AN ARTERIOVENOUS MALFORMATION IN THE INTESTINE

Reports on gastrointestinal bleeding causing by an arteriovenous malformation (AVM) in the GI organs are increasing seen with a progression in its diagnostic technology. Surgical excision is commonly employed for this disease, but we often have difficulties to perform emergency operation at massive bleeding. Recently a case of massive melena from an AVM in the large intestine in a 46-year-old man is experienced. The diagnosis was made based on abdominal antiography. Since his general condition was poor, a catheter was continuously indwelled without choice. Sustained intraarterial vasopressin infusion successfully managed the bleeding. There has been no bleeding, as of about 2 years after the treatment. Evaluation of everlasting effect of this vasopressin regimen for a colorectal AVM would demand further long-term follow up and accumulation of such cases. This regimen can at least be the first choice on serious cases having high risks for operation, like this case.