Peak Flow Range

  1. Does anyone know the formula for the optimum Peak Flow Range? I've heard some say BMI plays a part, I DO know you have to take in account age, height, and weight...in kilo's? Any help would be greatly appreciated! Someone told me to have a pt. take the best of three on the peak flow daily for two weeks and the average is their best. I understand that, BUT if a patient's asthma isn't under control, and they are constantly in the 240"s this may be their best. I just want to know how to figure what number they should shoot for!

    Thanks!
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  2. 2 Comments

  3. by   canoehead
    There is usually a chart included with each meter on my unit.
  4. by   NRSKarenRN

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