A pulmonary function test (PFT) evaluates how well your lungs work. PFTs measure the amount of air in your lungs, how well the lungs move air in and out, and possibly how medications affect the lungs. Your doctor may send you for PFTs to diagnose a lung disease, measure the severity of lung problems, as a pre-operative work-up or to see if a treatment is working for your lung disease. A respiratory therapist will guide you through each test in a special exam room that has all the lung function measuring devices.
Dow Jones Industrial Average index has 30 companies. What are the requirements or criteria for a company to be one of the 30 companies in Dow Jones Industrial Average index- DJIA component. 1 following.
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