• M C Oz, D M Cosgrove, B R Badduke, J D Hill, M R Flannery, R Palumbo, and N Topic.
• Columbia University, College of Physicians and Surgeons, New York, New York 10032, USA. mco2@columbia.edu
• Ann. Thorac. Surg. 2000 May 1;69(5):1376-82.

BackgroundWe performed a prospective randomized trial to compare FloSeal Matrix (Fusion Medical Technologies, Inc, Mountain View, CA), a gelatin-based hemostatic sealant, with Gelfoam-Thrombin (Gelfoam, Pharmacia and Upjohn, Kalamazoo, MI; Thrombin, Gentrac Inc, Middeton, WI) (control group) to control perioperative bleeding.MethodsA total of 93 patients undergoing cardiac operations were randomized into the FloSeal or control group after standard surgical means to control bleeding had failed. The bleeding site was evaluated at 1, 2, 3, 6, and 10 minutes after applying the hemostatic agent. If bleeding stopped within 10 minutes, the application was considered to be successful. In the case of a failure, the surgeon could use any means preferred (except FloSeal) to achieve hemostasis. All bleeding sites in a patient were treated with the hemostatic agent to which the patient was randomized. Follow-up evaluation was performed at 12 to 36 hours and 6 to 8 weeks after operation.ResultsFloSeal stopped bleeding in 94% of the patients (first bleeding site only) within 10 minutes, compared to 60% in the control group (p = 0.001). At 3 minutes, successful hemostasis was achieved in 72% of the FloSeal group compared with 23% in the control group (p = 0.0001). There was no difference in the adverse event profile between the two groups.ConclusionsFloSeal Matrix demonstrated efficacy superior to that of Gelfoam-Thrombin and had a safety profile similar to that of Gelfoam-Thrombin when used as a topical hemostatic agent during cardiac surgery procedures.

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