How often should you take a Pulmonary Function Test?

Answer 1

Pulmonary function tests or PFTs measure lung volumes and airflow to diagnose lung disease, monitor its progression, evaluate disability and response to meds. The tests are performed using a device called a spirometer. The patient's age, sex, height, and weight and used to calculate predicted values of a person with normal lung function, and then compared to actual patient results. The patient inserts a mouthpiece, takes a deep a breath as possible, and exhales as hard, fast, and long as possible. Verbal coaching is given to make sure the patient continues blowing out until exhalation is complete. It is normally over in a matter of minutes as long as you follow directions correctly.