How does one measure a patient's peak expiratory flow rate (PEFR)?

To measure a patient's peak expiratory flow rate (PEFR), the correct method is using a peak flow meter. This handheld device is specifically designed to assess how fast a person can exhale, which is crucial for monitoring respiratory conditions such as asthma. By quantifying airflow in liters per minute, the peak flow meter provides important information about a patient's lung function, allowing for timely adjustments in treatment or interventions when necessary.

Using a peak flow meter is advantageous because it is simple for patients to use at home, promoting self-monitoring and helping in recognizing any changes in their condition. Regular monitoring can aid in identifying triggers and managing symptoms effectively, ensuring that patients maintain optimal respiratory health.