A patient with asthma uses a peak-flow meter and obtains a reading below 50% of the personal best value. What does this result indicate?
Correct answer: C. The red zone requiring urgent action
- A. The green zone with well-controlled asthma
- B. The yellow zone with mild stable symptoms
- C. The red zone requiring urgent action
- D. A normal result after using a reliever inhaler
Explanation
A peak-flow reading below 50% of the patient's personal best is generally in the red zone and indicates severe airway narrowing. The patient should follow the prescribed emergency action plan and seek urgent care, rather than treating the result as stable control.
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About Respiratory Nursing
Covers nursing assessment and management of asthma, chronic obstructive pulmonary disease, pneumonia, tuberculosis, pleural disorders and respiratory failure. Key areas include breath sounds, oxygen therapy, airway suctioning, inhaled medicines, arterial blood gases and the difference between hypoxia, hypoxemia and carbon dioxide retention.
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