What is the primary use of a peak flow meter?

The primary use of a peak flow meter is to monitor breathing effectiveness in asthma management. This device measures the highest airflow that can be achieved during a forced expiration, reflecting how well air moves out of the lungs. By using a peak flow meter, individuals with asthma can track their lung function over time, identify changes in their ability to breathe, and detect early signs of an asthma attack or exacerbation. This enables timely interventions, adjustments in medication, and improved overall management of their condition.

In contrast to monitoring functions such as blood pressure, heart rate, or lung capacity, the peak flow meter specifically relates to assessing airflow and is critical for understanding asthma control. While other devices and tests may measure blood pressure or evaluate heart function, they do not provide the specific insights into bronchial responsiveness that are essential for effective asthma management.