SPIROMETRY/ PULMONARY FUCNTION TEST PFT
Spirometry is a common pulmonary function test used to assess how well your lungs are working. It measures two key components:
- Forced Vital Capacity (FVC): This is the total amount of air you can forcefully exhale after taking a deep breath.
- Forced Expiratory Volume in one second (FEV1): This is the amount of air you can forcefully exhale in the first second of the FVC maneuver.
Why It's Done:
Spirometry is typically used to diagnose and monitor respiratory conditions such as:
- Chronic Obstructive Pulmonary Disease (COPD)
- Asthma
- Pulmonary Fibrosis
- Cystic Fibrosis
How It Works:
During the test, a person breathes into a device called a spirometer. The person is asked to inhale deeply and then exhale as forcefully as possible into the mouthpiece. The device records the airflow and provides data on the volume and speed of the breath.
Interpreting Results:
- Normal: FVC and FEV1 are within the expected range.
- Obstructive Lung Disease: FEV1 is reduced, but FVC may remain normal. This suggests conditions like asthma or COPD.
- Restrictive Lung Disease: Both FVC and FEV1 are reduced, indicating reduced lung capacity, as seen in fibrosis or chest wall disorders.
Spirometry is simple, non-invasive, and provides valuable information about lung function.
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