Which is the most effective way for patients with persistent asthma to monitor the severity of their symptoms?

• A. Call the health care provider regularly
• B. Keep a diary of symptoms
• C. Monitor peak flow
• D. Ask a family member to monitor symptoms

Answer: (C)

Objectively tracking airway obstruction with a peak flow meter provides a practical, reproducible way for patients to monitor asthma severity. By measuring the peak expiratory flow and establishing a personal best during stable periods, patients can detect early declines in lung function and adjust treatment or seek care before symptoms become severe. Relying on symptoms alone is less reliable because perception can vary, be delayed, or miss ongoing airway inflammation. Regular calls to a clinician aren’t as timely for acute changes, and having a family member monitor symptoms isn’t a feasible or accurate substitute for the patient’s own measurements. Therefore, peak flow monitoring offers the most effective, immediate insight into control and severity in persistent asthma.