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  • Title: [Adherence to antiretroviral treatments with a protease inhibitor in HIV-infected patients].
    Author: Salmon-Céron D, Deleuze J, Coste J, Guerin C, Ginsburg C, Blanche P, Finkielsztejn L, Pecqueux L, Chaput S, Gorin I, Sicard D.
    Journal: Ann Med Interne (Paris); 2000 Jun; 151(4):297-302. PubMed ID: 10922958.
    Abstract:
    OBJECTIVE: Long-term therapeutic success of powerful antiretroviral treatments dependent on patient adherence. This study was conducted to assess the difficulties HIV-infected patients with advanced-stage disease encounter in adhering to antiretroviral treatments with a protease inhibitor. PATIENTS AND METHODS: A prospective self-administered questionnaire survey was conducted at our outpatient clinic for 2 months. CD4 counts and HIV viral loads were also determined. RESULTS: Seventy-one percent of the study population which included 262 responded to the questionnaire. The survey was made a median 215 days after initiating the antiprotease treatment with indinavir (71% of the cases), ritonavir (13%), saquinavir (6%), or a combination of protease inhibitors (10%). At onset of antiprotease treatment, mean CD4 count was 171+/-150/mm(3) and mean HIV viral load was 75,000 copies/ml. The treatment was considered to be difficult to take by 43% of the patients; 66% stated they had forgotten to take their drugs at least once a month. It was most difficult to take the drugs prescribed for the afternoon. Shifts of 1 hour were observed in 58% of patients. Non-adherence was frequent (1 failure to take drugs per week), observed in 13% of patients. Most often, the patients stated they had forgotten to take their drugs because of occupational or relational difficulties (52%). Non-adherence increased with duration of treatment. The drug most often associated with non-adherence was indinavir (73%). Age and sex did not influence adherence. Mean RNA HIV serum level was lower than at onset of the antiprotease treatment in the most non-adherent patients. At the time of the questionnaire, there was no difference in serum RNA HIV level or in the percentage of patients with an undetectable level between non-adherent and adherent patients. CONCLUSION: This survey confirmed difficulties in adherence are frequent and worsen with time. No relationship was found between non-adherence and reduction in viral load, suggesting that a short-term effect of these very active drugs despite lack of perfect adherence. Other factors (pharmacology, sensitivity to antiretroviral drugs.) also play a major role in therapeutic success.
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