Endocrine Pharmacology USMLE Step 1 Practice Question
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?
Answer choices
- AFlutamide
- BSpironolactone
- CLeuprolide
- DTamsulosin
- EFinasterideCorrect answer
- FDutasteride
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