An patient with asthma asks the purpose of learning to use a peak expiratory flow rate (PEFR) device.The nurse's best response is that the PEFR:
A) Dilates the bronchi to relieve dyspnea.
B) Measures expired air to evaluate ventilation.
C) Soothes inflamed bronchi, reducing spasm.
D) Liquefies sputum for easier expectoration.
Correct Answer:
Verified
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