Pulmonary Function Test

What is Pulmonary Function Testing (PFT)?

A Pulmonary Function Test (PFT) is a group of non-invasive breathing tests that evaluate how well your lungs are working. These tests measure lung capacity, airflow, and how efficiently oxygen moves from your lungs into your bloodstream. Pulmonary Function Testing is commonly used to diagnose and monitor conditions such as asthma, COPD, chronic bronchitis, pulmonary fibrosis, emphysema, and other respiratory disorders.

Is Pulmonary Function Testing Safe?

Pulmonary Function Testing is a safe and painless procedure typically performed in our office by a trained respiratory therapist or technician. The test usually takes between 30 and 60 minutes to complete.

During your appointment, you will receive instructions on how to breathe into specialized equipment that measures different aspects of lung function. The most common component of a PFT is spirometry, which evaluates how much air you can inhale and exhale and how quickly you can empty your lungs.

Depending on your symptoms and medical history, additional testing may be performed to measure:

• Lung capacity and lung volumes
• Airflow obstruction or restriction
• Oxygen transfer from the lungs to the bloodstream
• Response to bronchodilator medications
• Overall respiratory function

The results provide valuable information that helps your pulmonologist diagnose lung conditions, determine disease severity, monitor treatment effectiveness, and develop an individualized care plan.

Conditions Commonly Evaluated with Pulmonary Function Testing

Pulmonary Function Testing may be recommended if you are experiencing:

• Shortness of breath
• Chronic cough
• Wheezing
• Chest tightness
• Asthma symptoms
• COPD or emphysema
• Pulmonary fibrosis
• Occupational lung disease
• Unexplained breathing difficulties

How is the Pulmonary Test Performed?

Here’s a general overview of how a Pulmonary Function Test (PFT) is typically performed:

1. Preparation: Before the Pulmonary Function test, you may be asked to avoid certain medications that could affect your lung function, such as bronchodilators. You should also avoid heavy meals and strenuous exercise immediately before the test.
2. Explanation: A respiratory therapist or technician will explain the pulmonary function test procedure to you and answer any questions you may have. They will also ensure that you understand how to perform each part of the test correctly.
3. Equipment: You will be seated in a comfortable chair or standing, depending on the specific test being performed. A mouthpiece or nose clip may be provided to ensure that air is only breathed in and out through the device being used for the test.
4. Spirometry: The most common test in a PFT is spirometry. During this test, you will be asked to take a deep breath and then exhale as forcefully and completely as possible into a tube connected to a spirometer. This measures lung volume and airflow, providing information about lung function, including vital capacity, forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and FEV1/FVC ratio.
5. Lung Volume Measurements: Additional tests may be performed to measure lung volumes and capacities using different techniques, such as body plethysmography or gas dilution. These tests provide information about total lung capacity, residual volume, and functional residual capacity.
6. Diffusion Capacity Test: In some cases, a diffusion capacity test may be performed to assess how well oxygen moves from the lungs into the bloodstream. This involves breathing in a small amount of a harmless gas and holding your breath for a short time before exhaling.
7. Interpretation: The results of the PFT are analyzed by a healthcare provider, typically a pulmonologist, who interprets the data and provides a report. The results are compared to predicted values based on age, gender, height, and ethnicity to determine if there are any abnormalities or signs of lung disease.
8. Follow-up: Depending on the results of the test, further evaluation or treatment may be recommended. This could include additional tests, such as imaging studies or bronchoprovocation tests, or referral to a specialist for further evaluation and management.

Overall, a pulmonary function test is a valuable tool for assessing lung function and diagnosing respiratory conditions. It’s important to follow any instructions provided by your healthcare provider and perform the test to the best of your ability to ensure accurate results.

Contact NOVA Pulmonary Critical Care and Sleep Associates to learn more about pulmonary function tests.

Schedule a Pulmonary Function Test

If you are experiencing breathing difficulties, chronic coughing, wheezing, or other respiratory symptoms, Pulmonary Function Testing can provide important information about your lung health. Contact NOVA Pulmonary Critical Care and Sleep Associates to schedule an evaluation and learn more about our comprehensive pulmonary diagnostic services.

Frequently Asked Questions About Pulmonary Function Testing (PFT)

What is a Pulmonary Function Test (PFT)?

A Pulmonary Function Test (PFT) is a group of breathing tests used to measure how well your lungs are working. These tests evaluate lung capacity, airflow, and how efficiently oxygen moves from your lungs into your bloodstream.

Why would I need a Pulmonary Function Test?

Your healthcare provider may recommend a Pulmonary Function Test if you are experiencing symptoms such as shortness of breath, chronic cough, wheezing, chest tightness, or difficulty breathing. PFTs are commonly used to diagnose and monitor conditions such as asthma, COPD, emphysema, and pulmonary fibrosis.

How long does a Pulmonary Function Test take?

Most Pulmonary Function Tests take between 30 and 60 minutes to complete, depending on the type of testing being performed and the number of measurements required.

Is a Pulmonary Function Test painful?

No. Pulmonary Function Testing is a non-invasive and painless procedure. You will be asked to breathe into specialized equipment that measures lung function, but no needles or surgical procedures are involved.

How should I prepare for a Pulmonary Function Test?

Your provider may ask you to avoid smoking, strenuous exercise, heavy meals, and certain inhaled medications before the test. You should also wear loose, comfortable clothing that allows you to breathe easily.

Can I take my inhaler before a Pulmonary Function Test?

Some inhalers and bronchodilator medications may affect test results. Your provider will give you specific instructions regarding which medications to avoid and when to stop using them before your appointment.

What conditions can a Pulmonary Function Test help diagnose?

Pulmonary Function Tests can help diagnose and monitor conditions including asthma, COPD, emphysema, chronic bronchitis, pulmonary fibrosis, bronchiectasis, and other respiratory disorders.

What happens after the Pulmonary Function Test?

After the test, a pulmonologist will review and interpret the results. Your provider will discuss the findings with you and determine whether additional testing, treatment, or follow-up care is needed.

Can a Pulmonary Function Test detect asthma?

Yes. Pulmonary Function Testing is one of the most common tools used to diagnose asthma and evaluate how well your lungs respond to treatment.

Can a Pulmonary Function Test detect COPD?

Yes. Pulmonary Function Testing is commonly used to diagnose Chronic Obstructive Pulmonary Disease (COPD), determine its severity, and monitor disease progression over time.

Is Pulmonary Function Testing covered by insurance?

Most health insurance plans, including Medicare, typically cover Pulmonary Function Testing when it is medically necessary. Patients should check with their insurance provider regarding specific coverage and any applicable copays or deductibles.

Can I fail a Pulmonary Function Test?

No. There is no passing or failing a Pulmonary Function Test. The test simply measures how well your lungs are functioning and helps your provider identify any abnormalities or respiratory conditions that may require treatment.