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Topical use of antifibrinolytic agent to reduce postoperative bleeding after coronary artery bypass surgery.

Author(s): Breda JR, Gurian DB, Breda AS, Meneghine A, Freitas AC, Matos LL, Abreu LC, Pires AC

Affiliation(s): Faculdade de Medicina do ABC and Servico de Cirurgia Cardiovascular of Hospital Estadual Mario Covas, Santo Andre, SP, Brazil. jrbreda@hotmail.com

Publication date & source: 2009-09, Rev Bras Cir Cardiovasc., 24(3):341-5.

Publication type: Randomized Controlled Trial

OBJECTIVE: Antifibrinolytic agents reduce bleeding after cardiac surgery, but there are adverse effects after their systemic use. These effects are avoided by topical application of antifibrinolytic agents in pericardial cavity. We compared the effects of topically applied epsilon-aminocaproic acid (EACA) and placebo on postoperative bleeding and transfusion requirements after coronary artery bypass surgery. METHODS: In this single center prospective, randomized, double-blind trial, 53 patients were randomized into two groups to receive EACA (24 g in 250 ml of saline solution) or placebo (250 ml of saline solution) before sternal closure. Groups were comparable with respect to all preoperative and intraoperative variables. Postoperative bleeding, transfusion requirements and hematologic parameters were evaluated. RESULTS: Postoperative bleeding within first 24 hours (h) period (EACA group 154.66+/-74.64 x Placebo group 220.21+/-136.42 ml; P=0.031) showed statistically significant inter-group difference, within 48 h (EACA group 259.14+/-420.07 x Placebo group 141.67+/-142.58 ml; P=0.614), as well as cumulative blood loss (EACA group 832.07+/-576.86 x Placebo group 827.50+/-434.12 ml; P=0.975), not showed statistically inter-group differences. Inter-group difference of blood product requirements was statistically significant (EACA group 185.90+/-342.07 x Placebo group 439.42+/-349.07 ml; P=0.016). Laboratory analyses showed no differences between the two groups postoperative (hematologic characteristics: hemoglobin (g/dl)- EACA group 9.18+/-0.92 x Placebo group 8.85+/-1.48 g/dL; P=0.11; hematocrit (%)-EACA group 28.15+/-3.35 x Placebo group 26.67+/-4.15%; P=0.06). CONCLUSION: Topical use of epsilon aminocaproic acid reduces postoperative bleeding in the first 24 hours and requirements of blood transfusion after coronary artery bypass graft surgery.

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