What role does a peak flow meter play in asthma management?

A peak flow meter plays a crucial role in asthma management by measuring how well air moves out of the lungs. This device provides a simple and objective assessment of lung function, specifically focusing on the peak expiratory flow rate (PEFR). Monitoring PEFR helps individuals gauge the severity of their asthma and is particularly valuable for determining if their condition is stable or exacerbating. Regular use of a peak flow meter can guide treatment decisions, such as when to use rescue medication or seek medical help, and encourages proactive management of asthma symptoms.

In contrast, a peak flow meter does not measure blood pressure, record the frequency of symptoms, or assess oxygen saturation, which are functions associated with other medical tools and assessments. Each of these distinct tools serves a specific purpose in respiratory care, but they do not replace the role of a peak flow meter in tracking lung function.