What does a pulmonary function test (PFT) assess?

A pulmonary function test (PFT) is specifically designed to assess lung capacity and airflow. This diagnostic procedure measures how well the lungs are functioning and can provide crucial information about a person's respiratory health. It evaluates the volume of air the lungs can hold (lung capacity) and how efficiently air can be inhaled and exhaled (airflow).

The test can help identify conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other lung disorders. By analyzing the results, healthcare providers can gain insights into the mechanics of breathing, the efficiency of gas exchange, and the overall lung function, which is vital for determining appropriate treatment and management strategies for individuals with respiratory issues.

In contrast, factors like heart rate variability, blood pressure, and bacterial infections relate to other health aspects that PFT does not evaluate, as they pertain to cardiovascular function and infectious processes rather than respiratory capacity and efficiency.