A 71-year-old man with benign prostatic hyperplasia presents with urinary hesitancy, weak stream, and nocturia. Vital signs are stable (BP 142/88, HR 78, RR 16). Post-void residual urine volume is 120 mL on ultrasound. He denies erectile dysfunction. Laboratory studies show normal PSA at 2.8 ng/mL. He is started on an oral medication that inhibits conversion of testosterone to dihydrotestosterone, gradually shrinking the prostate. Which drug was most likely prescribed?
- A)Flutamide
- B)Spironolactone
- C)Leuprolide
- D)Tamsulosin
- E)FinasterideGABARITO
Explicação
Finasteride inhibits 5 alpha reductase, lowering dihydrotestosterone and reducing prostate volume over time. That endocrine mechanism distinguishes it from alpha blockers, which improve symptoms more rapidly through smooth muscle relaxation. Ver explicação completa e trilha adaptativa →