Approaches towards successful home treatment in patients with inhibitors.

Abstract

Significant advances have been achieved in prevention of haemophilic disability through prophylactic administration of concentrates and early administration of coagulation factors to control new bleeding episodes, but there is only limited experience with home treatment in haemophilia patients with inhibitors. A home treatment programme using recombinant activated factor VII (rFVIIa; NovoSeven, Novo Nordisk, Bagsvaerd, Denmark) in early intervention against minor bleeds in patients with high responding inhibitors was initiated in Denmark in June 1994. Following careful education and instruction, 2-3 doses each giving 90-100 micrograms/kg bodyweight of rFVIIa were stored in each patient's home. At the onset of a new bleeding episode patients were instructed to inject 1 dose of rFVIIa, and to call the Haemophilia Centre to discuss further management of the episode. If the drug was not completely effective after 1-2 h, a second dose was injected after 3 h. Patients were further instructed to contact us the following day for final efficacy reporting. In total, 7 patients have been enrolled into the study, and to date 114 bleeding episodes have been managed at home with a mean of 2.1 doses per bleed. On 4 occasions, recurrence of bleeding was noted within 24 h. Hospital admission was required in 9 cases, because of a serious injury, insufficient compliance or, in 2 cases, because bleeding required prolonged treatment. Management of these bleeding episodes required a mean of 18 doses. We propose and discuss key criteria for selection of patients for a home treatment programme. The results of this study demonstrate that early intervention in the home setting with rFVIIa is safe and effective in the management of minor bleeding episodes in haemophilia patients with inhibitors.