Peak flow readings improve if narrowed airways open up with treatment.īelow is an example of a two-week diary of peak flow readings done by a child who has quite bad asthma. Measuring your peak flow readings can help assess how well treatment is working. If the treatment causes a large improvement in your reading, this too is typical of asthma. Sometimes a peak flow reading is done before and after you take a dose of asthma medicine to open up your airways. This information can be used to inform your asthma action plan and help doctors make decisions to alleviate asthma symptoms or prevent asthma attacks. Microlife Digital Peak Flow Meter with FEV1 & Tracking Software Reliable & Accurate Respiratory Spirometer for Kids & Adults Perfect for Home Monitoring Asthma, COPD & Other Lung Conditions. You will normally be asked to take a 'best of three' peak flow reading each morning and evening. Vyaire Medical 1903A AirLife Volumetric Incentive Spirometers with One-Way Valve, 2500 mL, Pack of 12. Sometimes a doctor or nurse will give you a chart (like the one below), and ask you to keep a record of your peak flow readings for a week or so. This difference is much greater in people with untreated asthma than the normal small variation seen in most people. Typically, the readings are lower in the morning compared with the evening. Your peak flow readings will tend to vary quite a lot.No matter how strong you are, if your airways are narrowed, your peak flow will be lower than expected for your age, size, and sex. Your peak flow readings will usually be low.What are peak flow meters used for? To help diagnose asthma Another common error is to not put your lips right round the mouthpiece to make sure that all the air you blow out goes through the device. A common error is to not to blow as hard as you can. patient’s green, yellow and red zones based on personal best peak flow Indicators are designed so they do not move inadvertently AirLife brand AsthmaCheck peak flow meter With asthma management zone system Ordering information Cat. If they are not, you may not be blowing into the device correctly. However, when you do three blows straight after each other, the readings should all be about the same. Adapted by Clement Clarke for use with EN13826/EU scale peak flow meters from Nunn AJ, Gregg I, Br Med J 1898 298:106870. The 'best of three' is the reading to record. When checking your peak flow score, you should do three blows, one after the other. The further reading section has a link to an Asthma UK website which has a video showing how to use a peak flow meter. Briefly, you must put the marker to zero, take a deep breath, close your lips around the mouthpiece, then blow air out of your lungs as fast as you can into the device. It is important to do this correctly otherwise, the readings can be misleading. Your doctor, nurse or other healthcare professional will show you how to take a peak flow test.
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