Lung Function and Testing Concepts

The video tutorial by Olivia from Geeky Medics explains how to interpret spirometry test results. It covers the use of a spirometer to assess lung function, distinguishing between obstructive and restrictive lung diseases, and monitoring lung disease severity. Key spirometry measures like FEV1 and FVC are discussed, along with their interpretation using reference ranges. The video also compares obstructive and restrictive patterns and introduces the diffusion capacity of carbon monoxide test. Additional resources for further learning are provided.

What is the primary purpose of a spirometry test?

• To evaluate kidney function

• To assess lung function

• To measure blood pressure

• To check heart rate

Which measure indicates the total volume of air exhaled in one breath?

• TLC

• FEV1

• FVC

• PEFR

What should the FEV1 value be in relation to the predicted normal value?

• Less than 60%

• Exactly 70%

• Less than 50%

• Greater than 80%

What is a crucial step before interpreting spirometry results?

• Ensuring the patient is fasting

• Measuring the patient's weight

• Checking the patient's blood type

• Verifying patient details and result quality

In obstructive airway disease, what happens to the FEV1/FVC ratio?

• It becomes exactly 1.0

• It remains unchanged

• It increases above 0.9

• It decreases below 0.7

What does bronchodilator reversibility testing help diagnose?

• Asthma

• Pneumonia

• Pulmonary fibrosis

• Lung cancer

In restrictive lung disease, how is the FEV1/FVC ratio typically affected?

• It becomes zero

• It is always above 1.0

• It remains normal or increases

• It is reduced below 0.5

Which of the following is a non-pulmonary cause of restrictive lung disease?

• Pulmonary fibrosis

• COPD

• Obesity

• Bronchiectasis

What does the diffusion capacity of carbon monoxide test measure?

• The level of carbon dioxide in the blood

• The amount of oxygen in the blood

• The diffusion of carbon monoxide from the lungs into the blood

• The heart's pumping capacity

Which condition can lead to an increased diffusion capacity of carbon monoxide?

• Pulmonary fibrosis

• COPD

• Exercise

• Anemia