Table 5.

Recombinant factor VIIa (rFVIIa) dosing policies.*

*
Goodnough LT. Recombinant Factor 7a.
Washington University Laboratory Medicine Newsletter
2003
;
9
:
1
–4.
 
**Currently available in vials of 1.2 mg, 2.4 mg, and 4.8 mg. 
Abbreviations: FFP, fresh frozen plasma; DDAVP, desmopressin acetate; DIC, disseminated intravascular coagulation; ECMO, extracorporeal membrane oxygenation; VAD, vincristine, doxorubicin, and dexamethasone; INR, international normalized ratio; PT, prothrombin time; aPTT, activated partial thromboplastin time 
Currently Approved Clinical Settings 
  1. Patients with factor VIII or IX inhibitor

    • Vigorous bleeding, impending compartment syndrome, or bleeding in critical location: 90 μg/kg q 2–3 hours until patient hemostasis is achieved, then less frequently thereafter.

    • Persistent bleeding, not life or limb threatening: titrate both dose and interval to obtain adequate hemostasis.

    • Prior to invasive procedures: 90 μg/kg initially, subsequent doses, interval, and duration of treatment titrated to bleeding risk.

    • No signs of bleeding, stable Hgb: rFVIIa not indicated.

 
Currently Nonapproved Clinical Settings 
  1. Qualitative, quantitative platelet disorders and life threatening bleeding unresponsive to platelet transfusion.

    • Correct coagulopathy and anemia with platelets, FFP, cryoprecipitate, and red cell transfusions.

    • Administer DDAVP and Amicar.

    • Dialyze if uremic.

    • rFVIIa 4.8 mg vial (50–100 μg/kg for 100–50 kg patient). If clinical response, titrate dose and interval to maintain adequate hemostasis.

  2. Prolonged INR requiring rapid reversal

    • Minimal or no active bleeding

      • 10 mg Vitamin K IV or SQ

    • Life or limb at risk

      • 1.2 mg vial rFVIIa**, and

      • FFP 15–20 mL/kg, and

      • 10 mg vitamin K, IV infused over 20 minutes

      • *20 μg/kg for a 70 kg patient; subsequent doses of rFVIIa indicated for clinical signs of persistent bleeding, not to maintain a normal PT/INR.

  3. Uncontrollable hemorrhage associated with trauma, surgery, and liver failure.

    • Replace consumed/diluted hemostatic factors with FFP, cryoprecipitate, platelet transfusion, red cell transfusions.

    • Periodically monitor PT, aPTT, fibrinogen, platelet count, hemoglobin.

    • If excessive bleeding continues without apparent response to adequate blood components and no identifiable surgical source has been found, 4.8 mg vial rFVIIa (50–100 μg/kg for 100–50 kg patient). If bleeding does not diminish in 30–60 minutes, consider one more dose or surgical exploration.

    • Use rFVIIa with caution in patients at increased risk for thrombotic complications:

      • After cardiac surgery

      • Patients with history of coronary artery disease

      • Patients with history of venous or arterial thrombosis

      • Patients with DIC

      • Patients on ECMO or VAD

      • Patients with cerebral vascular disease

  4. Congenital factor VII deficiency.

    • Factor VII activity > 25%, expectant management except neurologic, cardiothoracic, or ophthalmologic surgery/trauma.

    • Factor VII activity < 25% and minor trauma/surgery:

      • Initial treatment: 10–15 mL/kg FFP

      • Repeat 3–6 mL/kg at 6–8 hour intervals until hemostasis is achieved.

    • Factor VII activity < 25% and at risk for neuro, cardiothoracic, ophthalmologic bleeding:

      • Initial treatment: rFVIIa 1.2 mg vial (20 μg/kg for 70 kg patient) q 2 hours until hemostasis is achieved.

      • Titrate dose and interval to ongoing bleeding risk.

      • Combined treatment with FFP and rFVIIa at lower doses is a consideration, in patients who can tolerate volume infusions.

 
*
Goodnough LT. Recombinant Factor 7a.
Washington University Laboratory Medicine Newsletter
2003
;
9
:
1
–4.
 
**Currently available in vials of 1.2 mg, 2.4 mg, and 4.8 mg. 
Abbreviations: FFP, fresh frozen plasma; DDAVP, desmopressin acetate; DIC, disseminated intravascular coagulation; ECMO, extracorporeal membrane oxygenation; VAD, vincristine, doxorubicin, and dexamethasone; INR, international normalized ratio; PT, prothrombin time; aPTT, activated partial thromboplastin time 
Currently Approved Clinical Settings 
  1. Patients with factor VIII or IX inhibitor

    • Vigorous bleeding, impending compartment syndrome, or bleeding in critical location: 90 μg/kg q 2–3 hours until patient hemostasis is achieved, then less frequently thereafter.

    • Persistent bleeding, not life or limb threatening: titrate both dose and interval to obtain adequate hemostasis.

    • Prior to invasive procedures: 90 μg/kg initially, subsequent doses, interval, and duration of treatment titrated to bleeding risk.

    • No signs of bleeding, stable Hgb: rFVIIa not indicated.

 
Currently Nonapproved Clinical Settings 
  1. Qualitative, quantitative platelet disorders and life threatening bleeding unresponsive to platelet transfusion.

    • Correct coagulopathy and anemia with platelets, FFP, cryoprecipitate, and red cell transfusions.

    • Administer DDAVP and Amicar.

    • Dialyze if uremic.

    • rFVIIa 4.8 mg vial (50–100 μg/kg for 100–50 kg patient). If clinical response, titrate dose and interval to maintain adequate hemostasis.

  2. Prolonged INR requiring rapid reversal

    • Minimal or no active bleeding

      • 10 mg Vitamin K IV or SQ

    • Life or limb at risk

      • 1.2 mg vial rFVIIa**, and

      • FFP 15–20 mL/kg, and

      • 10 mg vitamin K, IV infused over 20 minutes

      • *20 μg/kg for a 70 kg patient; subsequent doses of rFVIIa indicated for clinical signs of persistent bleeding, not to maintain a normal PT/INR.

  3. Uncontrollable hemorrhage associated with trauma, surgery, and liver failure.

    • Replace consumed/diluted hemostatic factors with FFP, cryoprecipitate, platelet transfusion, red cell transfusions.

    • Periodically monitor PT, aPTT, fibrinogen, platelet count, hemoglobin.

    • If excessive bleeding continues without apparent response to adequate blood components and no identifiable surgical source has been found, 4.8 mg vial rFVIIa (50–100 μg/kg for 100–50 kg patient). If bleeding does not diminish in 30–60 minutes, consider one more dose or surgical exploration.

    • Use rFVIIa with caution in patients at increased risk for thrombotic complications:

      • After cardiac surgery

      • Patients with history of coronary artery disease

      • Patients with history of venous or arterial thrombosis

      • Patients with DIC

      • Patients on ECMO or VAD

      • Patients with cerebral vascular disease

  4. Congenital factor VII deficiency.

    • Factor VII activity > 25%, expectant management except neurologic, cardiothoracic, or ophthalmologic surgery/trauma.

    • Factor VII activity < 25% and minor trauma/surgery:

      • Initial treatment: 10–15 mL/kg FFP

      • Repeat 3–6 mL/kg at 6–8 hour intervals until hemostasis is achieved.

    • Factor VII activity < 25% and at risk for neuro, cardiothoracic, ophthalmologic bleeding:

      • Initial treatment: rFVIIa 1.2 mg vial (20 μg/kg for 70 kg patient) q 2 hours until hemostasis is achieved.

      • Titrate dose and interval to ongoing bleeding risk.

      • Combined treatment with FFP and rFVIIa at lower doses is a consideration, in patients who can tolerate volume infusions.

 
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