The role of very low-dose prophylaxis in severe hemophilia patients.

Abstract

Introduction: Very low-dose prophylaxis of antihemophilic factor (AHF) in hemophilia involves administration of minimal amounts of clotting factor concentrates, typically below standard doses, to maintain baseline levels and reduce bleeding episodes. This method uses smaller, more frequent doses to balance bleeding prevention and cost-effectiveness. Close monitoring ensures adequate protection while avoiding overtreatment, offering a tailored, cost-effective approach to improve the quality of life (QoL) of the hemophiliacs.

Aim: The study aims to study the bleeding risks in patients with severe hemophilia who are on very low-dose AHF prophylaxis. It also seeks to assess the annual consumption of AHF in the hemophiliacs. In addition, the research will determine the QoL in both groups using the social functioning (SF)-36 questionnaire,evaluate patient compliance with the prophylactic regimen, and check functional disability using the Functional Independence Score in Hemophilia (FISH).

Materials and methods: The patients selected for the study were diagnosed with cases of hemophilia and were planned for any surgical procedure. The study was a cross-sectional study lasting 12 months. Patients over 13 years were included and patients with any other bleeding tendencies were excluded from the study.

Results: The differences found in the study, were significant in terms of annual bleed rate (ABR), amount of AHF consumed, SF-36, and FISH scores.

Conclusion: Our study found that very low-dose prophylaxis significantly reduced the ABR in hemophilia patients. Functional independence worsened in the control group but remained stable in the test group, which showed significant improvements in SF-36 domains. The test group had no inhibitor development and showed a decline in severe bleeds, proving the efficacy and superiority of low-dose prophylaxis over on-demand therapy.