A peak flow meter is a simple device to measure how quickly you can move air out of your lungs.
• It can help you see if an attack is coming, sometimes even before symptoms appear. Peak flow measurements help let you know when you need to take medicine or other action (Obie).
• Peak flow values of 50% - 80% of your best results are a sign of a moderate asthma attack. Numbers below 50% are a sign of a severe attack (Nowak RM).
Unfortunately, there's no way to cure asthma, although symptoms sometimes improve over time. Work with your doctor to create an asthma action plan that outlines in writing when to take certain medications or when to increase or decrease the dose of your medications based on your symptoms. With proper self-management and medical treatment, most people with asthma can lead normal lives.
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