Cardiothoracic & vascular anesthesia

Factor Eight Inhibitor Bypass Activity Use in Cardiac Surgery: A Propensity-matched Analysis of Safety Outcomes

AnesthesiologyPublished Retrospective cohort study

Authors' conclusion

Low-dose FEIBA administration during cardiac surgery does not increase risk of thromboembolic events, intensive care unit length of stay, or mortality in a propensity-matched cohort. Higher doses were associated with increased acute renal failure and postoperative transfusion.

Study context

Population
Adults undergoing cardiac surgery on CPB, Stanford Hospital, July 1, 2018–June 30, 20233,335 reviewed
Participants
704 adults
Exposure
Factor eight inhibitor bypass activity (FEIBA) vs no FEIBA for post-CPB bleeding
  • FEIBAn = 352
  • No FEIBAn = 352reference
Outcome
Composite of thromboembolic complications (DVT, PE, unplanned coronary artery intervention, ischemic stroke, acute limb ischemia)
Follow-up
Postoperative period
Methodological detailspropensity-score matched (1:1, nearest neighbor), single-centre, Mean FEIBA dose 7.3 ± 5.5 U/kg
  • Propensity-score matched (1:1, nearest neighbor)
  • Single-centre
  • Mean FEIBA dose 7.3 ± 5.5 U/kg

Main finding

As reported in the abstract

Thromboembolic outcomes
  • No statistically significant difference in OR for thromboembolic outcomes
  • Propensity-matched cohort

Observational data: associations, not effects.

Secondary outcomes

Acute renal failure, FEIBA >750 U (dose subgroup)

OR (95% CI)P value
FEIBA >750 UPropensity-matched multivariate logistic regression4.14 (1.61–10.36)P < 0.001

Postoperative transfusion of erythrocytes and platelets, FEIBA 501 to 750 U (dose subgroup)

β

Only the dose range of 501 to 750 U associated with increased erythrocyte transfusion
2.73 (95% CI 0.68 to 4.78, P = 0.009)
Only the dose range of 501 to 750 U associated with increased platelet transfusion
1.74 (95% CI 0.85 to 2.63, P < 0.001)
  • Multivariate linear regression

Postoperative plasma and cryoprecipitate transfusion

Patients receiving FEIBA transfused more plasma and cryoprecipitate postoperatively
  • Multivariate linear regression

ICU LOS and mortality

No statistically significant difference in ORs
  • Propensity-matched

Safety

Acute renal failure (FEIBA >750 U)

OR (95% CI)P value
FEIBA >750 U4.14 (1.61–10.36)P < 0.001

Original publication

Factor Eight Inhibitor Bypass Activity Use in Cardiac Surgery: A Propensity-matched Analysis of Safety Outcomes. Anesthesiology. Published 26 August 2024. doi:10.1097/aln.0000000000005208

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