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  • Title: Impact of delaying 5-alpha reductase inhibitor therapy in men on alpha-blocker therapy to treat BPH: assessment of acute urinary retention and prostate-related surgery.
    Author: Naslund M, Eaddy MT, Hogue SL, Kruep EJ, Shah MB.
    Journal: Curr Med Res Opin; 2009 Nov; 25(11):2663-9. PubMed ID: 19757985.
    Abstract:
    OBJECTIVE: Pharmacologic treatment of lower urinary tract symptoms from benign prostatic hyperplasia (BPH) commonly includes alpha-blockers (ABs) and 5alpha-reductase inhibitors (5ARIs). Many clinicians use ABs for rapid symptom control and 5ARIs to modify long-term disease progression. The purpose of this study was to assess the clinical impact of delayed 5ARI therapy in patients treated with AB for lower urinary tract symptoms. RESEARCH DESIGN AND METHODS: Using two nationally representative databases, two retrospective analyses were conducted including patients aged > or =50 years treated for BPH between 2000 and 2007. Clinical outcomes for those using add-on 5ARI therapy early (within 30 days of initiating AB) and late (>30 days after initiating AB) were compared. Likelihood of clinical progression, defined as the presence of acute urinary retention (AUR) and prostate surgery, was assessed over 1 year after AB initiation, and modeled as a function of the treatment cohorts and the following baseline covariates: AUR, BPH stage, Charlson Comorbidity Index, age, and number of unique diagnosis codes, unique non-BPH-related classes of prescriptions filled, and specialty care. RESULTS: Of 6896 men included in the analyses, approximately 60% initiated 5ARI therapy within 30 days of AB therapy (the early cohort). Patients in the early cohort were less likely to have clinical progression. Each 30-day delay in starting 5ARIs resulted in an increased likelihood of overall clinical progression (average 21.1%), AUR (average 18.6%), and prostate-related surgery (average 26.7%). CONCLUSIONS: These results suggest that delaying 5ARI therapy in men with BPH increases the risk of AUR and prostate surgery. LIMITATIONS: Confounding factors, such as symptom severity and prostate volume, may have influenced the findings of the study.
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