THE MERCK MANUAL HOME HEALTH HANDBOOKmultimedia

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  • Pulmonary Function Testing (PFT)
  • Spirometry[Spirometry]Spirometry: Recording

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    Spirometry uses a computer (that is, a spirometer) to measure lung function. Normal breathing is recorded on a video monitor as small circles. Next, a deep inhalation is recorded as a larger dotted semicircle on the bottom, and a full exhalation is recorded as a dotted descending curve on top.

    (Video from Lahey Clinic Media Center.)

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