Benign prostatic hyperplasia progression and its impact on treatment.
PURPOSE OF REVIEW: Management of men with benign prostatic hyperplasia should reduce the lifetime risk of acute urinary retention and the need for benign prostatic hyperplasia-related surgery. A number of recent studies demonstrate that 5alpha-reductase inhibitors are unique in providing a long-term combination of improvements in symptoms and flow, and reductions in the risks of acute urinary retention and surgical intervention. RECENT FINDINGS: The 5alpha-reductase inhibitor finasteride was shown to reduce the risk of retention and surgery in men with large prostate volumes and/or high PSA. Recent studies have examined the role of adding an alpha1-blocker to 5alpha-reductase inhibitor in short- or long-term combination. The Medical Therapy of Prostatic Symptoms study randomised 3,047 men with benign prostatic hyperplasia to treatment with a 5alpha-reductase inhibitor (finasteride), an alpha1 blocker (doxazosin), a combination of both, or placebo. Only treatment arms containing 5alpha-reductase inhibitor therapy were associated with longer-term significant reductions in the risk of acute urinary retention and invasive therapy for benign prostatic hyperplasia. Three randomised, two-year, placebo-controlled studies have assessed the clinical relevance of the >93% DHT suppression provided by dutasteride. Dutasteride was also associated with a reduction in the risk of acute urinary retention of 57%, and a reduction of 48% in the risk of surgical intervention compared with placebo after 2 years. SUMMARY: Short-term combination of 5alpha-reductase inhibitor and alpha-blockade are optimal in providing symptomatic improvement among patients who require symptom relief, while enabling the initiation of 5alpha-reductase inhibitor therapy to reduce the risk of subsequent acute urinary retention or benign prostatic hyperplasia-related surgery in men who are at greater risk of disease progression.[1]References
- Benign prostatic hyperplasia progression and its impact on treatment. Djavan, B., Waldert, M., Ghawidel, C., Marberger, M. Current opinion in urology. (2004) [Pubmed]
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