NAPLEX Quiz
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MEDICATION USE PROCESS
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A 67-year-old male (weight 74 kg) presents with dizziness and near-syncope after starting a new medication. Current medications: tamsulosin 0.4 mg by mouth nightly (started 2 days ago), sildenafil 50 mg by mouth as needed (took a dose last night), lisinopril 10 mg by mouth daily, and hydrochlorothiazide 25 mg by mouth daily. Blood pressure in clinic is 88/56 mmHg; labs: serum creatinine 1.1 mg/dL, potassium 4.2 mEq/L; allergies: none; medical history: benign prostatic hyperplasia, erectile dysfunction, hypertension. What is the most likely adverse reaction in this patient?
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