What can be used to monitor asthma symptoms over time?

Using a peak flow meter is an effective way to monitor asthma symptoms over time. This handheld device measures the maximum speed at which air can be expelled from the lungs. By regularly using a peak flow meter, individuals with asthma can track their lung function and identify changes in their condition, often before symptoms escalate.

Monitoring peak flow readings over time allows patients to recognize patterns in their asthma symptoms, helping them to identify triggers or worsening of their condition. This information can be essential for both the patient and their healthcare provider in managing the disease effectively, making timely adjustments to treatment plans as necessary.

In contrast, the other options listed do not specifically relate to monitoring asthma. A sleep study is typically used for diagnosing sleep disorders, a blood pressure monitor is for cardiovascular health, and a thermometer assesses body temperature, none of which provide relevant data regarding asthma symptom status.