Spirometry, a common PFT, can differentiate between obstructive and restrictive lung diseases by measuring the volume of air expelled from the lungs and the speed of the exhalation.
True
False
The statement is correct because spirometry is indeed used to measure the amount (volume) and the speed (flow) at which air can be inhaled and exhaled from a patient's lungs. This information helps to differentiate between obstructive lung diseases, where exhalation is impaired, and restrictive lung diseases, where lung expansion is limited.
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