Desmopressin (DDAVP) in Patients With Colorectal Cancer and Rectal Bleeding

"Dose groups: Group 1: 0.25 µg/kg/day; Group 2: 0.25 µg/kg/12 hours; Group 3: 0.50 µg/kg/12 hours; Group 4: 1 µg/kg/day; Group 5: 1 µg/kg/12 hours; Group 6: 2 µg/kg/day.~All groups will receive desmopressin intravenously, in a 15-20 minutes infusion, one or two times a day. The administration will be repeated 24 hours after the first infusion."