Using a Peak Flow Meter
- VHL HealthSheet #82481_VA
A peak flow meter measures how fast you can push air out of your lungs. This tells you how well you are controlling your asthma. Measure your peak flow as many times a day as your health care provider tells you to.
Your Asthma Zone Action Plan (Adult)
- VHL HealthSheet #82473_VA
Peak flow monitoring lets you know how well you’re controlling your asthma. It does this by telling you which asthma zone you’re in. If needed, you’ll be given an action plan that tells you what to do if your asthma gets out of control. Your healthcare team will explain how your symptoms or peak flow numbers can help you know which zone you’re in. This chart helps you understand each zone.
Peak Flow Meter
- VHL Video
A peak flow meter for asthma is like a thermometer for a fever - it helps you monitor what's going on inside your lungs by measuring airflow out of the lungs. The meter can tell you if your airways are narrowing well before asthma symptoms begin. Learn how to use a peak flow meter, how to find your "personal best," and how to set your peak flow zones.