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What is spirometry with bronchodilators and what info does it tell you?

3 doctors weighed in
Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
2 doctors agree

In brief: Asthma lung function

Spirometry measures how well & how quickly you can fill & empty your lungs.
When asthma is present you may not be able to empty your lungs as fast as usual. This is easily recorded using a spirometer. After the initial test you are given a bronchodilator & the test is repeated. An improvement of 12% of more is considered evidence of "reversible bronchospasm" and consistent with asthma.

In brief: Asthma lung function

Spirometry measures how well & how quickly you can fill & empty your lungs.
When asthma is present you may not be able to empty your lungs as fast as usual. This is easily recorded using a spirometer. After the initial test you are given a bronchodilator & the test is repeated. An improvement of 12% of more is considered evidence of "reversible bronchospasm" and consistent with asthma.
Dr. Steven Machtinger
Dr. Steven Machtinger
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