Efficacy of factor VIII/von Willebrand factor concentrate Alphanate in preventing excessive bleeding during surgery in subjects with von Willebrand disease.

The adequacy of perioperative haemostasis with a high-purity, plasma-derived factor VIII product containing von Willebrand factor was retrospectively evaluated in 39 patients with type 1, 2 or 3 von Willebrand disease who underwent 61 major or minor surgical or invasive procedures. Overall, 93.5% of the responses to treatment were rated as excellent or good by the physician investigators. These ratings were confirmed by an independent panel of physician referees.