Final answer:
Doxazosin (Cardura) is the most appropriate medication for a patient with both hypertension and benign prostatic hyperplasia as it can treat both conditions.
Step-by-step explanation:
In the treatment of a 71-year-old male patient with a history of hypertension and preexisting benign prostatic hyperplasia (BPH), selecting the most appropriate medication requires considering both conditions. Doxazosin (Cardura), which is an alpha-blocker, not only lowers blood pressure by relaxing blood vessels but also relaxes the muscles in the prostate and bladder neck, which can help to improve urination symptoms associated with BPH.
In contrast, drugs like losartan (Cozaar), an angiotensin receptor blocker (ARB), and metoprolol (Lopressor), a beta-blocker, are more focused on treating hypertension without specific benefits for BPH. Felodipine (Plendil), a calcium channel blocker, would also primarily address hypertension. Therefore, doxazosin would be the medication that can manage both the patient's hypertension and BPH.