Seminars in thrombosis and hemostasis, 2002, Vol.28(2), pp.203-214
ABSTRACT Fourteen patients with different types of von Willebrand disease (vWD) having acute bleeds or elective surgery were treated with Immunate ℗ , a double-virus inactivated factor VIII/von Willebrand factor (FVIII/vWF) concentrate. The concentrate was applied as a bolus or via continuous infusion. FVIII activity (FVIIIc), vWF antigen (vWF:Ag), ristocetin cofactor activity (vWF:RCo), collagen binding activity (vWF:CB), activated partial thromboplastin time (aPTT), and von Willebrand multimers (vW-multimers) were monitored for 48 hours. Pharmacokinetic analyses were performed. The clinical efficacy was rated excellent or good. Bleeding complications occurred in 3 patients due to an additional FXIII deficiency in one patient, to a surgically induced bleed in another patient, and a rather short substitution period in the third patient. There were no serious adverse experiences. One patient showed a phlebitic reaction at the site of venous access after more than 100 hours of continuous infusion, requiring a change to application via bolus.
Von Willebrand Disease ; Surgery ; Acute Bleeds ; Immunate ; Clinical Efficacy
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