A Pulmonary Function Test (PFT) is a group of tests used to measure how well the lungs are working. These tests evaluate lung volume, capacity, flow rates, and the efficiency with which oxygen and carbon dioxide are exchanged. PFTs help diagnose, monitor, and assess the severity of lung diseases or conditions, and they are often used to assess how well the lungs are functioning in people with conditions like asthma, chronic obstructive pulmonary disease (COPD), fibrosis, and other respiratory issues.Types of Pulmonary Function Tests:Spirometry:This is the most common PFT and measures how much air you can breathe in and out,
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