What does peak flow measure?
Your peak flow is the flow that you can achieve when blowing out as fast as possible after breathing in as much air as possible. Your best peak flow or Best Effort is unique to you and will be determined with the assistance of your doctor or respiratory therapist. Why should I use a Peak Flow Meter? Asthma may cause the airways to narrow and limit how well you can get the air out of the lungs. Your peak flow may help to make you aware of these changes before you feel poorly. It is important to monitor your symptoms and changes in peak flow. Monitoring changes in your lung function will help you know when your asthma is changing. Many times medications can be taken before symptoms worsen. It may also help you avoid a serious asthma episode. Your doctor can further explain the importance of measuring your peak flow. Knowledge of your normal or near normal peak flow, or at least being able to achieve your best possible result as a response to therapy, can give you security in the knowledg
