Pulmonary Function Testing

Pulmonary Function Testing is a computerized test measuring a child's ability to take air into and out of the lungs. This test is useful in diagnosing disorders of the respiratory tract, such as asthma and restrictive lung diseases.

During the test, a clip will be placed on the child's nose, and he or she will be asked to breathe into a computerized mouthpiece. The mouthpiece measures inspiratory and expiratory airflow.

Just as a thermometer measures body temperature, the peak flow meter is used to measure the fastest speed at which air is forced out of the lungs after taking a deep breath. This measurement is useful in detecting changes in airways that could signal a worsening of symptoms or an improvement in breathing. This is a useful, portable tool to assist the physician in evaluating daily lung function.