Pulmonary function test (PFT) is a complete evaluation of the respiratory system including patient history, physical examinations, and tests of pulmonary function. The primary purpose of pulmonary function testing is to identify the severity of pulmonary impairment. Pulmonary function testing has diagnostic and therapeutic roles and helps clinicians answer some general questions about patients with lung disease. PFTs are normally performed by a respiratory therapist, physiotherapist, pulmonologist, and/or general practitioner.
Indications
Pulmonary function testing is a diagnostic and management tool used for a variety of reasons, such as:- Chronic shortness of breath
- Asthma
- Chronic obstructive pulmonary disease
- Restrictive lung disease
- Preoperative testing
- Impairment or disability
- Early morning wheezing
Pediatric neuromuscular disorders
Neuromuscular disorders such as Duchenne muscular dystrophy are associated with gradual loss of muscle function over time. Involvement of respiratory muscles results in poor ability to cough and decreased ability to breathe well and leads to collapse of part or all of the lung leading to impaired gas exchange and an overall insufficiency in lung strength. Pulmonary function testing in patients with neuromuscular disorders helps to evaluate the respiratory status of patients at the time of diagnosis, monitor their progress and course, evaluate them for possible surgery, and gives an overall idea of the prognosis.
