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Related Experiment Videos

Small-dose recombinant activated factor VII (NovoSeven) in cardiac surgery.

Stefano Romagnoli1, Sergio Bevilacqua, Sandro Gelsomino

  • 1Department of Cardiac Surgery; Careggi Hospital, Florence, Italy. romagnoliste@tiscali.it

Anesthesia and Analgesia
|April 25, 2006
PubMed
Summary

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Small-dose recombinant activated factor VII (rFVIIa) effectively reduced blood loss and transfusions in cardiac surgery patients with intractable bleeding. This treatment also improved coagulation parameters and decreased ICU stay and re-exploration rates.

Area of Science:

  • Cardiovascular Surgery
  • Hematology
  • Pharmacology

Background:

  • Recombinant activated factor VII (rFVIIa) is used in various bleeding scenarios.
  • Intractable bleeding post-cardiac surgery presents significant management challenges.
  • Optimizing hemostatic strategies in cardiac surgery is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the efficacy of a small dose of rFVIIa in managing intractable bleeding after cardiac surgery.
  • To compare blood loss and transfusion requirements between patients treated with small-dose rFVIIa and a control group.

Main Methods:

  • A case-control study involving 15 cardiac surgery patients with intractable bleeding treated with small-dose rFVIIa (1.2 mg IV bolus).
  • A matched control group of 15 patients from the pre-rFVIIa era who received standard transfusion protocols.

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  • Primary outcome measured was blood loss at the end of the transfusion protocol.

    • Main Results:

    • Significantly lower 24-hour blood loss in the rFVIIa group (1685 mL) compared to controls (3170 mL) (P=0.0004).
    • Reduced transfusions of red blood cells (7 U vs 18 U), fresh-frozen plasma (7.5 U vs 11 U), and platelets (0 U vs 9 U) in the rFVIIa group.
    • Improved prothrombin time, international normalized ratio, activated partial prothrombin time, and platelet count in the rFVIIa group.
    • Shorter intensive care unit length of stay and less frequent surgical re-exploration in patients receiving rFVIIa.

    Conclusions:

    • Small-dose rFVIIa demonstrated satisfactory efficacy in controlling intractable bleeding in cardiac surgery patients.
    • rFVIIa treatment led to significant reductions in blood loss, transfusion needs, and improved clinical outcomes.
    • Further randomized controlled trials are warranted to confirm these findings and establish optimal protocols.