Cardiothoracic & vascular anesthesia

Superiority of Fibrinogen Concentrate Versus Cryoprecipitate for Treatment of Bleeding in Cardiac Surgery Patients: A Secondary Analysis of the FIBRES Randomized Clinical Trial Stratified by Surgical Risk

J Cardiothorac Vasc AnesthPublished Secondary analysis of the FIBRES randomised trial

Authors' conclusion

FC showed superior hemostatic efficacy to cryoprecipitate in the prespecified subgroups of elective cardiac surgery patients and patients who were not in a critical state before surgery, representing the large majority of patients with bleeding postbypass.

Study context

Population
Adult cardiac surgery patients with significant postbypass bleeding and acquired hypofibrinogenemia (fibrinogen <2.0 g/L or FIBTEM A10 <10 mm), 11 Canadian hospitals, February 2017-November 2018included in primary analysis
Participants
735 patients
Comparison
Fibrinogen concentrate vs cryoprecipitate
  • Fibrinogen concentrate (FC)n = 372
  • Cryoprecipitaten = 363reference
Primary endpoint
Cumulative blood components (red cells, platelets, plasma) administered
Follow-up
Within 24 hours postbypass
Methodological detailsmulticentre, a priori-defined subgroups, stratified by surgical risk
  • Multicentre
  • A priori-defined subgroups
  • Stratified by surgical risk

Primary result

As reported in the abstract

Cumulative blood components, by subgroup

Mean ratio

0.84

95% CI 0.73–0.96P = 0.01

FC (non-critically ill) vs Cryoprecipitate (non-critically ill) · n = 634, 86% of population

Mean ratio

0.81

95% CI 0.69–0.96P = 0.02

FC (elective surgery) vs Cryoprecipitate (elective surgery) · n = 466, 63% of population

FC (non-critically ill)

13.6

mean · units

Cryoprecipitate (non-critically ill)

16.2

mean · units

FC (elective surgery)

11.7

units

Cryoprecipitate (elective surgery)

14.4

units

Safety

OutcomeRR (CI)P value
Adverse events (elective surgery subgroup)Less frequent with FC0.85 (0.75–0.97)P = 0.02
Serious adverse events (elective surgery subgroup)Less frequent with FC0.71 (0.52–0.99)P = 0.04

Original publication

Superiority of Fibrinogen Concentrate Versus Cryoprecipitate for Treatment of Bleeding in Cardiac Surgery Patients: A Secondary Analysis of the FIBRES Randomized Clinical Trial Stratified by Surgical Risk. J Cardiothorac Vasc Anesth. Published 17 June 2026. doi:10.1053/j.jvca.2026.06.019

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