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Does tranexamic acid decrease bleeding in patients undergoing cardiopulmonary bypass?

N R Connelly1, B M Kiessling, S J Brull

  • 1Department of Anesthesiology, Baystate Medical Center, Tufts University School of Medicine, MA, USA.

The Yale Journal of Biology and Medicine
|September 1, 1994
PubMed
Summary
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Tranexamic acid reduced chest tube bleeding after cardiopulmonary bypass surgery. However, this reduction in bleeding did not translate into improved patient outcomes or fewer transfusions for patients receiving tranexamic acid.

Area of Science:

  • Cardiovascular Surgery
  • Anesthesiology
  • Pharmacology

Background:

  • Cardiopulmonary bypass (CPB) is associated with significant bleeding.
  • Tranexamic acid is a plasmin inhibitor used to reduce bleeding.
  • The clinical benefit of tranexamic acid in CPB remains under investigation.

Purpose of the Study:

  • To evaluate the efficacy of tranexamic acid in reducing postoperative bleeding after CPB.
  • To determine if tranexamic acid administration impacts patient outcomes, including transfusion requirements.

Main Methods:

  • Retrospective review of 66 patients undergoing CPB.
  • Comparison between patients receiving tranexamic acid and a control group.
  • Analysis of chest tube bleeding, hematocrit, platelet counts, and transfusion needs.

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Main Results:

  • Patients receiving tranexamic acid showed significantly greater 12-hour chest tube bleeding (863 +/- 655 mL) compared to the control group (495 +/- 484 mL; p < .02).
  • No significant differences were observed in postoperative hematocrit, platelet counts, or the number of patients requiring transfusion between the groups.
  • Heparin and protamine requirements were similar between the tranexamic acid and control groups.

Conclusions:

  • Tranexamic acid administration did not demonstrate a clear patient benefit despite reducing chest tube output.
  • The study suggests that the reduction in bleeding observed with tranexamic acid may not be clinically significant in the context of CPB.
  • Further research is needed to elucidate the role and potential benefits of tranexamic acid in cardiac surgery.