Pulmonary Function Testing
Pulmonary function testing measures how well you are breathing. There are different types of pulmonary function tests that can be done. Spirometry is a very common type of pulmonary function test, and it is what we do at Beyond Urgent Health. Spirometry is a simple test to measure how much (volume) and how fast (flow) you can move air into and out of your lungs.
How does spirometry work?
Spirometry uses a machine called a spirometer. A spirometer is a medical device that consists of a mouthpiece and a tube. They connect to a machine that measures your airflow.
Why test my lung function?
Through routine spirometry, lung diseases like Asthma and COPD can often be diagnosed in the early stages when treatment is most effective. Once a lung disease is diagnosed and treated, routine spirometry tests can monitor changes in lung functions with specific treatment. This will help your doctor find the best treatment plan for you.
What happens during the spirometry test?
We will instruct you on how to perform the spirometry test in our office. You will take in a deep breath and blow into a mouthpiece attached to the spirometer. You will blow out as hard and as fast as you can until your lungs feel absolutely empty. You will be asked to repeat the test several more times until there are two to three good efforts. You will be coached and encouraged to do your best during the test. A good effort during the test is important to get good results.
A computerized sensor (which is part of the spirometer) calculates and graphs the results. The results demonstrate a person’s air flow rates or the volume forced out within the first second. This is the Forced Expiratory Volume in the first second (FEV1). This indicates whether or not there is airway obstruction. Spirometry also records the total volume of air forced out of the lungs. This is the Forced Vital Capacity (FVC). The percentage of the FVC exhaled in the first second (FEV1) is also calculated with spirometry. This is the FEV1/FVC. These spirometry results will help your doctor determine the best treatment for you.
Is a spirometry test painful?
No, a spirometry test isn’t painful.
However, you may feel dizzy, lightheaded or tired from breathing in and out so deeply. Blowing into the tube may also cause you to cough. These symptoms should go away shortly after you complete the test. Let your healthcare provider know if you need a break during testing.
Spirometry can also increase your heart rate. Tell your healthcare provider if you’ve had a heart attack in the past or any other conditions that affect your heart.
How long does spirometry take?
It takes about 15-30 minutes to complete the test.
How do spirometry test results help my healthcare provider?
Spirometry test results help your healthcare provider determine:
- If your symptoms are the result of asthma or another condition.
- If there’s a blockage or narrowing in your airways.
- If treatment is working.
- If your lungs are lower in volume than normal, which may require more testing.
- If a pulmonary disease is stable or getting worse.
- The severity of your disease.