Spirometry is a common office test used to assess what?

Spirometry is a common office test used to assess what?

• A. A blood test to measure oxygen carrying capacity
• B. A test to evaluate lung function by measuring inhaled and exhaled air and the speed of exhalation
• C. An imaging test of the chest
• D. A test that measures heart function during exercise

Answer: (B)

Spirometry tests how well the lungs move air by measuring the volumes and flow of air you breathe out. You breathe into a mouthpiece connected to a device that records how much air you exhale and how fast you exhale, giving measurements like FEV1, FVC, and their ratio. These values show whether airways are obstructed (as in asthma or COPD) or if there’s a restrictive pattern (limited lung expansion). It’s specifically about lung function through inhaled and exhaled air and the speed of exhalation, not about blood tests, imaging, or heart function.

Spirometry tests how well the lungs move air by measuring the volumes and flow of air you breathe out. You breathe into a mouthpiece connected to a device that records how much air you exhale and how fast you exhale, giving measurements like FEV1, FVC, and their ratio. These values show whether airways are obstructed (as in asthma or COPD) or if there’s a restrictive pattern (limited lung expansion). It’s specifically about lung function through inhaled and exhaled air and the speed of exhalation, not about blood tests, imaging, or heart function.