Lung Function Tests: What Affects The Test
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What Affects the Test
Reasons you may not be able to have the test or why the results may not be helpful include:
- Using medicine that expands the lungs' airways within 4 hours of the test.
- Using sedatives before the test.
- Eating food or drinks that contain caffeine before the test.
- Not being able to breathe normally because of pain.
- Pregnancy, obesity, or an enlarged stomach (after a large meal, for example).
- Not being able to follow instructions and give some effort to the tests.
| Last updated: | July 03, 2007 |
|---|---|
| Author: | Maria G. Essig, MS, ELS |
| Reviewed By: | Caroline S. Rhoads, MD - Internal Medicine, Robert L. Cowie, MB, FCP(SA), MD, MSc, MFOM - Pulmonology |
| Editors: | Sydney Youngerman-Cole, RN, BSN, RNC, Tracy Landauer |
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