Pharmacology · single question
A 56-year-old female with hypertension, hyperlipidemia, and asthma takes Albuterol, Atorvastatin, and Metoprolol. What is the mechanism of action of the medication controlling her HYPERTENSION?
Show answer and explanation
Correct answer: A. Competitively inhibits β2 adrenergic receptors
- A. Correct. Metoprolol (Lopressor) controls hypertension. It is a cardioselective β1-blocker that reduces heart rate and cardiac output.
- B. Incorrect. Nitric oxide release is the MOA of nitroglycerin/nitrates.
- C. Incorrect. Calcium channel blockade is amlodipine/verapamil.
- D. Incorrect. Metoprolol is β1-selective. Albuterol is the β2 agonist in this patient (for asthma).