Fatores determinantes para modifica？？es da terapia antirretroviral inicial

objective: to investigate factors determining changes in initial antiretroviral therapy (art) in patients attended to in an aids tertiary care hospital in ceará, brazil. methods: this descriptive and exploratory study used the analysis of request to initiate or change treatment forms in the year of 2008, and the changes in therapy were followed through the first year of treatment. data were analyzed with spss and epiinfo by using anova and the exact test of the coefficient of contingency, with significance at p < 0.05. results: from 301 patients initiating art, 22.1% (n = 68) needed a change in the first year. these patients were mostly males, aged 20 to 39 years; with only one art changed needed in 86.8% of the cases (n = 59). reports of two or three changes in regimen were observed. zidovudine was the drug most often changed, followed by lopinavir/ritonavir and efavirenz. a significant association was found between changes in initial regimens and the report of adverse reactions (p < 0.001). conclusion: the main factor determining changes in the initial art was an adverse reaction report. most patients had one change in the initial art over the first year of treatment. art monitoring contributed to a better control of the specific drug therapy.