Collagen hemostat significantly reduces time to hemostasis compared with cellulose: COBBANA, a single-center, randomized trial.

Background: This single-center, randomized trial compares the hemostatic effectiveness of microfibrillar collagen and oxidized cellulose in arterial bypass surgery.

Methods: In patients undergoing arterial bypass surgery, 2 hemostats, microfibrillar collagen and oxidized cellulose, were randomly used to achieve hemostasis. The primary endpoint was the time to hemostasis.