Continuous infusion of factor VIII (FVIII) concentrates during surgical procedures offers the potential for improved hemostatic control and reduced FVIII consumption, but requires stable FVIII concentrates. The stability of ADVATE, Antihemophilic Factor (Recombinant), Plasma/Albumin-Free Method (rAHF-PFM), was examined using various simulated conditions. Experiments performed with a multi-therapy 6060 pump showed FVIII recoveries of 95% or more after 48 h for multiple lots of high-potency and mid-potency rAHF-PFM, with or without heparin. Non-infused controls maintained at the same temperature showed similar FVIII recovery, demonstrating that the infusion system did not cause loss of FVIII activity. Supportive data generated using single lots of mid-potency or high-potency rAHF-PFM infused through a MEDEX or HARVARD syringe pump, or a CADD Pump-1, demonstrated FVIII recoveries of 83% or more at 24 or 48 h under all conditions tested. Additionally, rAHF-PFM was stable immediately after dilution in saline or saline/dextrose solutions, and after a 10-h exposure to ultraviolet and visible light. Taken together, these data demonstrate that rAHF-PFM is stable under conditions typically encountered during continuous infusion, and suggest that rAHF-PFM should be safe and effective when used for FVIII replacement by continuous infusion in patients with hemophilia A.
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