A patient with a dry, irritating cough is prescribed dextromethorphan. Which effect should the nurse explain?
Correct answer: A. It suppresses the cough reflex in the central nervous system
- A. It suppresses the cough reflex in the central nervous system
- B. It kills bacteria causing a lower respiratory infection
- C. It increases urine output to remove airway fluid
- D. It relaxes cardiac muscle to reduce blood pressure
Explanation
Dextromethorphan is a centrally acting antitussive that reduces the cough reflex and is used mainly for a dry, nonproductive cough. It is not an antibiotic, diuretic or cardiovascular vasodilator.
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About Cardiovascular and Respiratory Drugs
Cardiovascular and respiratory drugs include antihypertensives, diuretics, antianginal agents, antiarrhythmics, cardiac glycosides, anticoagulants, bronchodilators, corticosteroids and cough medicines. Questions focus on mechanisms, indications, contraindications, toxicity and monitoring, especially the difference between drugs that reduce blood pressure, improve cardiac output or open narrowed airways.
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50 free Cardiovascular and Respiratory Drugs MCQs from Nursing Pharmacology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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