Spirometry, derived from Latin words “spiro”, to breathe, and “meter”, to measure, is one of the most common pulmonary function tests (PFT). The measurement of the amount of air that can be exhaled and inhaled in one forced breath is called spirometry. Spirometry tests are conducted via spirometers.

Spirometry is used to identify respiratory patterns and diagnose chronic diseases such as asthma, COPD, and pulmonary fibrosis. Patients continue to conduct spirometry tests after their diagnosis to monitor their disease progression.

When conducting a spirometry test

  • Inhale fully, make sure you have completely filled your lungs with air,
  • Close your lips around the mouthpiece, and
  • Exhale all the air in your lungs as forcefully and quickly as you can.

Your healthcare professional will ask you to repeat this multiple times for reliability.

What is spirometry?

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  1. NHS Choices, NHS, www.nhs.uk/conditions/spirometry/

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