Pulmonary Function Test
Pulmonary Function Test
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The most commonly performed PFTs include:
- Spirometry: This test measures how much air you can breathe in and out, how fast you can exhale, and how much air you can exhale in one second (forced expiratory volume in one second, or FEV1).
- Lung volumes: This test measures the total amount of air in your lungs, including the amount of air you can breathe in (inspiratory capacity) and the amount you can breathe out (expiratory reserve volume).
- Diffusion capacity: This test measures how well oxygen and carbon dioxide move from your lungs into your bloodstream.
- Other PFTs include plethysmography, which measures lung volume while you’re sitting inside a sealed box, and exercise stress tests, which measure your lung function during physical activity.
PFTs are safe and non-invasive, and they are typically performed in a doctor’s office or a pulmonary function laboratory. Your doctor may order PFTs if you have symptoms of lung disease, such as shortness of breath, coughing, or wheezing. The results of PFTs can help your doctor make an accurate diagnosis and develop a treatment plan tailored to your individual needs.
Your doctor may order pulmonary function tests (PFTs) if you have symptoms of lung disease, such as:
- Shortness of breath
- Wheezing
- Coughing
- Chest tightness
- Difficulty breathing
- Fatigue during physical activity
- Frequent respiratory infections
- Asthma or COPD (chronic obstructive pulmonary disease)
- Allergies
- Occupational exposure to lung irritants or pollutants
- Lung cancer or other lung diseases
- Pre-surgical evaluation in patients with respiratory issues
In addition, PFTs may be ordered to assess the severity of lung disease, monitor disease progression, or evaluate the effectiveness of treatment. If you have any concerns about your lung health, speak with your doctor to determine if PFTs are right for you.