Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Lung Function Tests
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Learn about asthma tests for children.
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Learn about spirometry tests for children.
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Forced expiratory volume (FEV) measures how much air a person can exhale during a forced breath. The amount of air exhaled may be measured during the first (FEV1), second (FEV2), and/or third seconds (FEV3) of the forced breath. Forced vital capacity (FVC) is the total amount of air exhaled during the FEV test...
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Other tests for lung infections, such as pneumonia and acute bronchitis, may include: Blood tests or cultures. Blood tests may help tell whether antibodies to a specific organism that can cause pneumonia are present or whether specific viruses, such as influenza (flu) or respiratory syncytial virus (RSV)...
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Lung function tests check how well your lungs work. The tests can find lung problems, measure how serious they are, and check to see how well treatment for a lung disease is working. The tests look at: How much air your lungs can hold. How quickly you can move air in and out of your lungs. How well your lungs put...
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Lung function means how well your lungs work. When you have COPD, your lungs can't move as much air in and out as they should. And the more serious your COPD is, the less air your lungs are able to move. Spirometry tests are used to measure lung function. They measure how much air you breathe out when you take long...
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A home lung function test uses a peak flow meter or a home spirometer to monitor and evaluate any breathing problems you may have on a day-to-day basis. A peak flow meter allows you to measure your peak expiratory flow. A home spirometer allows you to measure your forced expiratory volume at 1 second (FEV1). If you...
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Learn about asthma tests for children.
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An asthma action plan is based on zones defined by your symptoms, your peak flow, or both. It tells you what to do if you or your child has a sudden increase in asthma symptoms (asthma attack). The green zone of the asthma action plan is where a...
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Peak expiratory flow (PEF) measures how much air you or your child can breathe out using the greatest effort. It is used in the monitoring and treatment of asthma to determine how well your lungs are functioning. Your peak flow drops when the tubes...
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An asthma action plan is based on zones defined by your symptoms or your peak flow, or both. It tells you what to do if you have a sudden increase in your asthma symptoms (asthma attack). The yellow zone may mean that you are having an asthma attack...
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An asthma action plan is based on zones defined by your symptoms, your peak flow, or both. It tells you what to do if you have a sudden increase in your asthma symptoms (asthma attack). You are in the red zone of your asthma action plan if you have...
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Covers control of asthma with asthma action plan. Includes working with doctor on a plan and medicines for symptoms and attacks. Includes use of controller medicine and peak flow meter. Reviews avoiding triggers and keeping asthma diary.