Spirometry

Definition

Spirometry is a common pulmonary function test used to assess lung function by measuring the volume and speed of air that can be inhaled and exhaled. It helps diagnose conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other disorders affecting breathing.

5 Must Know Facts For Your Next Test

1. Spirometry measures two key metrics: Forced Vital Capacity (FVC) and Forced Expiratory Volume in one second (FEV1).
2. Poor nutrition can negatively impact spirometry results by weakening respiratory muscles.
3. Malnutrition can lead to decreased FVC and FEV1, indicating compromised lung function.
4. Nutritional interventions, such as increased protein intake, can improve spirometry outcomes in patients with respiratory diseases.
5. Hydration status can affect spirometry results; dehydration may reduce lung volumes.

Review Questions

• What are the primary measurements taken during a spirometry test?
• How does poor nutrition affect spirometry results?
• Why might hydration status impact the outcomes of a spirometry test?

Related terms

Forced Vital Capacity (FVC): The total amount of air exhaled during the FEV test.

Forced Expiratory Volume (FEV1): The amount of air a person can forcefully exhale in one second.

Pulmonary Function Test (PFT): A group of tests that measure how well the lungs take in and release air and how efficiently they transfer oxygen into the blood.