Using a peak flowmeter is an asthmatic child or an adult can understand the upcoming attack. This tool is used as follows:
1. Reset flowmeter.
2. Standing Take a deep breath.
3. Flowmeter into your mouth and your lips tightly closed. Do not make a hole in your language tool. The blow with a strong and fast as possible.
4. Flowmeter type the value shown. Repeat the same process two more times. Made to obtain the highest value of three measurements compared to the previous reference measurement of asthma is under control, will show how much.
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