The pulmonary function test is an important test which measures lung function and helps in managing and monitoring lung function.
Why should one perform Pulmonary function test?
The simple answer is to know the current lung status. It helps to diagnose the cause of breathlessness, cough, chest tightness or wheezing. It can be COPD -Chronic obstructive pulmonary disease or Asthma or any other lung disease.
Are there different types of PFT?
Yes, the basic lung parameters such as forced expiratory volume (in 1 sec usually reduced in COPD/Asthma) can be easily assessed by office spirometry. However Total lung capacity and diffusion (transfer of oxygen/other gases from lung to body) requires specialized test. These are required in some cases such as Interstitial lung disease. Sometimes respiratory muscle function is also analyzed by another special test.
Why are PFTs important?
PFTs are vital for the following reasons.
1. Early diagnosis
2. Disease monitoring
3. Surgical evaluation
4. Occupational and legal health
How much time does it take for the test?
It usually takes around 30-40 minutes to complete the test.
What to expect during the test? is it Painful?
It’s a noninvasive (painless) test. Avoid heavy meals prior to the test, wear loose clothing. You would be asked to breathe into a mouthpiece, technician will guide you for the breathing technique. Each test is performed multiple times, sometimes it can be exhaustive. Don’t worry, the better and forceful the breath the better are the results.
How to interpret PFT results
PFT is interpreted by trained professionals, usually pulmonologists. The doctor compares various test results using lung ratios and broadly categories them into obstructive or restrictive lung abnormality.
In conclusion, PFT is a very easy test and helps in effective diagnosis of lung ailments.
STOP SMOKING, START WALKING….
For any queries related to lung problems, visit Panacea Clinic.
Blog By
Dr. Sameer Lote
Interventional Pulmonologist