Cardiothoracic & vascular anesthesia

Hemostatic effects of tranexamic acid in cardiac surgical patients with antiplatelet therapy: a systematic review and meta-analysis

Perioper Med (Lond)Published Systematic review and meta-analysis of randomised trials

Authors' conclusion

This meta-analysis demonstrated that TXA significantly reduced post-operative blood loss and transfusion requirements for cardiac surgical patients with preoperative APT.

Study context

Population
Adult cardiac surgical patients with preoperative antiplatelet therapy (APT)
Participants
3,018 patients · 12 randomized-controlled trials (RCTs)
Comparison
Intravenous tranexamic acid (TXA) vs control
  • TXAn = 1,510
  • Controln = 1,508reference
Outcome
Post-operative blood loss
Methodological detailssubgroup analyses, meta-regression
  • Subgroup analyses
  • Meta-regression

Pooled result

As reported in the abstract

Post-operative blood loss, by APT type

MD

- 0.38 L

95% CI - 0.73 to - 0.03P = 0.03

Dual antiplatelet therapy (DAPT)

MD

- 0.26 L

95% CI - 0.28 to - 0.24P < 0.00001

aspirin

MD

- 0.37 L

95% CI - 0.63 to - 0.10P = 0.007

clopidogrel

Further pooled results

OutcomeEstimate
Post-operative blood loss (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively)TXA vs Control · DAPT discontinued on the day of surgeryMD - 1.23 L (95% CI - 1.42 to - 1.04)
Post-operative blood loss (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively)TXA vs Control · DAPT discontinued less than 5-7 days preoperativelyMD - 0.16 L (95% CI - 0.27 to - 0.05)
RBC transfusion (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively)TXA vs Control · DAPT discontinued on the day of surgeryMD - 3.90 units (95% CI - 4.75 to - 3.05)
RBC transfusion (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively)TXA vs Control · DAPT discontinued less than 5-7 days preoperativelyMD - 1.03 units (95% CI - 1.96 to - 0.10)
  • Post-operative blood loss (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively): P < 0.00001 for subgroup difference
  • RBC transfusion (subgroup: DAPT discontinued on day of surgery vs less than 5-7 days preoperatively): P < 0.00001 for subgroup difference

Reoperation for bleeding

Significantly lower incidence in TXA vs Control

Post-operative RBC and fresh-frozen plasma (FFP) transfusion

Significantly lower in TXA vs Control

Original publication

Hemostatic effects of tranexamic acid in cardiac surgical patients with antiplatelet therapy: a systematic review and meta-analysis. Perioper Med (Lond). Published 17 June 2024. doi:10.1186/s13741-024-00418-3

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