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  • Title: An objective method for assessing adherence to prophylaxis in adults with severe haemophilia.
    Author: Ho S, Gue D, McIntosh K, Bucevska M, Yang M, Jackson S.
    Journal: Haemophilia; 2014 Jan; 20(1):39-43. PubMed ID: 23919911.
    Abstract:
    Severe haemophilia is often managed by prophylactic factor infusions in developed countries. The benefits of secondary prophylaxis in adults are currently being studied and adherence to the prescribed prophylactic factor regimen is vital to decreasing bleeding episodes. The aim of this study was to measure discrepancy between the physicians' prescription for prophylactic factor usage, and the actual factor usage obtained through infusion logs. During this method subjects with severe haemophilia A or B (FVIII or FIX ≤2%), from a single haemophilia clinic with complete medical and infusion records from July 01, 2009 to June 30, 2011, were evaluated. Continuous prophylaxis ≥4 weeks were included in the analysis. A scoring system for adherence to prescribed dosing and frequency was developed. A global scale of adherence was performed by two independent nurses using visual analogue scale. Thirty-one subjects, all with haemophilia A, with a median age of 26 years (range 18-56) were included. Results showed that the median (IQR) adherence rate to prescribed frequency and dosage, respectively, was 76% (67;85) and 93% (73;97). In multivariate analysis, only the length of time on prophylaxis during the study period showed a positive correlation with adherence whereas age, number of co-infections, number of bleeds and number of joints with chronic arthropathy did not. Global nursing assessments were in general agreement with the score. In conclusion, we observed a moderately good level of adherence based on score and by the nurse global assessment. Better adherence was found in subjects with longer exposure to prophylaxis.
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