At What Age Can A Child Be Diagnosed With Asthma

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Diagnosis


Pulmonary Function Tests

If symptoms and a patient's history strongly suggest asthma, the doctor will usually perform tests called pulmonary function tests to confirm the diagnosis and determine the severity of the disease.

Using a spirometer, an instrument that measures the air taken into and exhaled from the lungs, the doctor will determine several values:

  • Vital capacity (VC), the maximum volume of air that can be inhaled or exhaled.
  • Peak expiratory flow rate (PEFR), commonly called the...
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