A Retrospective Study on Unfractionated Bovine Heparin Safety in On-Pump Cardiac Surgery
AUTOR(ES)
Torres, Fernando Antonio de Lima; Torres, Andressa C. B; Ribeiro, Allinson; Maia, Cauê O; Almeida, Fernanda P; Roceto, João; Matkovski, Jorge A; Kovalski, Matheus G; Pizato, Vanessa A; Cordeiro, Tatiana M. G
FONTE
Int. J. Cardiovasc. Sci.
DATA DE PUBLICAÇÃO
2020-05
RESUMO
Abstract Background: Heparin decreases the risks of thrombotic phenomena in extracorporeal circulation. However, it must present a robust safety profile itself, especially for bleeding. Contamination of porcine heparin demands an alternative source and consequent assessment of safety. Objective: To evaluate the safety of unfractionated bovine heparin during on-pump cardiac surgery. Methods: Descriptive, retrospective study, evaluating medical records from all patients who had on-pump cardiac surgery over four years. We observed the occurrence of bleeding, thrombocytopenia, postoperative vasoplegia, activated clotting time values and any other coagulation phenomena as safety profile parameters. Results: We evaluated 204 medical records reporting the use of unfractionated bovine heparin. 66.18% of the patients presented thrombocytopenia, 1.04% presented bleeding of more than 2000 mL in the first 24 hours of the postoperative period. One patient presented clots in the surgical field. Median activated clotting time was 137 seconds at baseline, 803 seconds after the first dose of heparin and, after protamine, it returns to similar baseline values, that is, 149.5 seconds. Conclusion: Unfractionated bovine heparin did not present unusual adverse effects and can be considered safe for on-pump cardiac surgery.
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