PFT Test Centre

• December 25, 2022
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Pulmonary function tests, or PFTs, measure how well the lungs work. For some of the test measurements, the client can breathe normally and quietly. Other tests require forced inhalation or exhalation after a deep breath. Sometimes, they will be asked to inhale a different gas or a medicine to see how it changes test results. Lung volume tests are the most accurate way to measure how much air the lungs can hold. Lung volume measurement can be done in two ways: .The most accurate way is called body plethysmography. You sit in a clear airtight box that looks like a phone booth. The technologist asks you to breathe in and out of a mouthpiece. Changes in pressure inside the box help determine the lung volume. .Lung volume can also be measured when you breathe nitrogen or helium gas through a tube for a certain period of time. The concentration of the gas in a chamber attached to the tube is measured to estimate the lung volume.

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