What condition can a peak flow meter help monitor?

A peak flow meter is a device specifically designed to measure the maximum speed of expiration, which is a key indicator of respiratory function. It is particularly useful for individuals with asthma, as it helps monitor how well air moves out of the lungs. By tracking the peak expiratory flow rate (PEFR), patients can identify changes in their lung function and recognize when their asthma may be worsening, allowing for timely intervention and management.

While other conditions listed, like hypertension, diabetes, and bronchitis, involve different types of monitoring and may affect pulmonary function, they do not directly relate to the specific use of a peak flow meter. Therefore, monitoring asthma is the correct application of the device, making it an essential tool for managing this respiratory condition effectively.