Physiology Lab 7: Pulmonary Function Tests

Questions and Answers

To evaluate heart function

To measure the function of the lungs (correct)

To measure the lung capacity of healthy individuals

To screen patients with diabetes

Individuals with cardiovascular issues

Athletes in training

Smokers and individuals exposed to harmful substances (correct)

Children with asthma

Severe lung disease

Restrictive lung defect

Obstructive defect (correct)

Normal lung function

FEV1 ≤ 80% and FEV1/FVC ≥ 70% Signup and view all the answers

To treat lung infections Signup and view all the answers

Spirometer Signup and view all the answers

Study Notes

Pulmonary function tests (PFTs) are procedures that evaluate lung function.
They determine the impact of diseases on pulmonary function.
These tests are vital for screening individuals at risk of pulmonary diseases, including smokers and those in specific occupational exposures.

PFTs are essential for assessing therapeutic interventions such as:
- Bronchodilator therapies.
- Steroid treatments for conditions like asthma and interstitial lung disease.
- Other treatments, for example, antibiotics for cystic fibrosis.
Important for monitoring adverse reactions to medications known to affect lung function.

Obstructive lung disease is indicated by:
- FEV1 (Forced Expiratory Volume in 1 second) ≤ 80% and FEV1/FVC (Forced Vital Capacity) ≤ 70%.
- If FVC is normal, classification is pure obstruction; if FVC ≤ 80%, there may be additional restriction.
Restrictive lung disease is indicated by:
- FEV1 ≤ 80%, FVC ≤ 80%, and FEV1/FVC ≥ 70%.
- Confirmation requires measurement of lung volumes.