Factor VIIa Coagulation Factor - Recombinant -@- Antihemophilic Agents
Drug Name:
Factor VIIa Coagulation Factor - Recombinant -@- Antihemophilic Agents
List Of Brands:
Indication Type Description:
Pharmacology/ Pharmacokinetics
Drug Interaction:
Coagulation factor concentrates-
The risk of apotential interaction between coagulation factor VIIa were thrombotic reactions.but
the extent of the extent of risk of interactions is considered low.
Indication:
Bleeding episodes
Adverse Reaction:
Common adverse reactions-
Arthalgia, edema, headache, hemorrhage , hypertension, hypotension, injection site reactions,
nausea, pain, pyrexia, rash and vomiting
Contra-Indications:
Special Precautions-
Thrombotic reactions- the extent of risk of arterial and venous thromboembolic adverse reactions
after treatment with coagulation Factor VIIa in patients without hemophilia is not known.
Safety and efectiveness have not been established.
Prolonged administration- excercise caution when coagulation factor VIIa is used for prolonged
dosing
Concomittant use with other formulations- concomittant use of caoagulation factor VIIa with other
formulation is not known.
Hypersensitivity- administer coagulation factor VIIa with caution in patients with known
hypersensitivity to the drug or any other components or in patients with known hypersensitivity
Pregnancy- use coagulation factor VIIa during pregnancy only if the potential benefits justifies
the potential risk to the fetus.
Lactation- decide whether to discontinue breast feeding or the drug taking into consideration the
importance of the drug to the mother.
Monitoring- Monitor deficient patient to PT and factor VII coagulant activity before and after
administeration. If PT is not corrected, or bleeding is not controlled after treatment with the
recommended doses, suspect antibody formation and perform analysis for antibodies
Dosages/ Overdosage Etc:
Indication-
Bleeding episodes
Dosage-
90mcg/kg every 2 hours by slow bolus infusion until hemostatsis is acheived or until the treatment
has been judged to be inadequate .
Doses between 35 and 120mcg/kg have been used successfully in clinical trials for Hemophilia
A or B patients with inhibitors to factor VIII or factor IX, and both the dose dose and the degree of
hemostatis acheived.
Patient Information:
1. Inform patients receiving coagulation Factor VIIa of the benefits and risks associted with the
treatment
2. Warn patients about the early signs of hypersensivity reactions, including anaphylaxis, hives,
hypotension, tightness of the chest, urticaria, and wheezing.
3. Although bleeding can cause similar symptoms, warn patients about the signs of altered
consiciosness or speech , loss of sensation or motor power, new onset of chest pain,
new onset of swelling and pain in the limbs, or abdomen, or shortness of breath.
Pharmacology/ Pharmacokinetics:
Pharmacology-
Recombinant Factor VIIa when complexed with tissue factor can activate coagulation factor X
to factor Xa, as well as coagulation factor IX to factor IXa.
Factor Xa a complex with other factors then converts prpthrombin to thrombin, which leads to
the formation of hemostatic plug by converting fibronogen to fibrin and therby inducing local
hemostasis.
Pregnancy and lactation:
Pregnancy-
Use coagulation factor VIIa during pregnancy only if the potential benefits justifies
the potential risk to the fetus.
Lactation-
Decide whether to discontinue breast feeding or the drug taking into consideration the
importance of the drug to the mother.