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What are pulmonary function tests? Pulmonary function tests (PFTs) are noninvasive tests that show how well
the lungs are working. The tests measure lung volume, capacity, rates of
flow, and gas exchange. This information can help your healthcare provider
diagnose and decide the treatment of certain lung disorders.
There are 2 types of disorders that cause problems with air moving in and
out of the lungs: Obstructive. This is when air has trouble flowing out of the lungs due to airway resistance. This causes a decreased flow of air. Restrictive. This is when the lung tissue and/or chest muscles can't expand enough. This creates problems with air flow, mostly due to lower lung volumes. PFT can be done with 2 methods. These 2 methods may be used together and
perform different tests, depending on the information that your healthcare
provider is looking for: Spirometry. A spirometer is a device with a mouthpiece hooked up to a small electronic machine. Plethysmography. You sit or stand inside an air-tight... 更多資訊 Why might I need pulmonary function tests? There are many different reasons why pulmonary function tests (PFTs) may be
done. They are sometimes done in healthy people as part of a routine
physical. They are also routinely done in certain types of work
environments to ensure employee health (such as graphite factories and coal
mines). Or you may have PFTs if your healthcare provider needs help to
diagnose you with a health problem such as: Allergies Respiratory infections Trouble breathing from injury to the chest or a recent surgery Chronic lung conditions, such as asthma, bronchiectasis, emphysema, or chronic bronchitis Asbestosis, a lung disease caused by inhaling asbestos fibers Restrictive airway problems from scoliosis, tumors, or inflammation or scarring of the lungs Sarcoidosis, a disease that causes lumps of inflammatory cells around organs, such as the liver, lungs, and spleen Scleroderma, a disease that causes thickening and hardening of connective tissue PFTs may be used to check... 更多資訊
