What is forced vital capacity?

Forced vital capacity (FVC) is a measure of the amount of air that someone can forcibly exclude from the lungs after breathing to fill the lungs as much as possible. The air value is usually used to express FVC. This measure is an important indicator of lung health. In humans such as chronic obstructive pulmonary disorder (COPD) and asthma), the forced vital capacity is usually lower than expected in people of similar sex, height, fitness and weight.

During lung testing, known as spirometry, is forced vital capacity, one of the things that is measured. The patient is asked to take a deep breath to fill the lungs as much as possible. This breath may not be fast or strong. Once the lungs are full, the patient blows as quickly and as quickly as possible into a device capable of measuring the amount of air that the patient ejects.ard tail. Spike represents an initial explosion of air released from the lungs. Once the patient's lungs have blown out, less air is emitted and as a result the amount of VZ decreasesthe spirit relaxed in time. This creates a distinctive tail seen on the graph of forced vital capacity.

This test is usually repeated several times to form a diameter. Patients may have difficulty adapting the equipment, which may result in a beveled initial value. When patients are used to equipment and process, values ​​will be more accurate. Averaging allows the clinical physician to balance the score across several measures to come up with a meaningful value.

athletes usually have a higher forced vital capacity, because their lungs are developed, especially if they play sports and work for a long time. People like swimmers, runners and cyclists who can have significantly better lungs Than other individuals. Larger people also tend to have higher values ​​because their lungs are larger. There are graphs to compare the results of a patient with people with a similar profile to determine whether SPAThey put to normal values. If the test values ​​are forced vital capacity unusually low, it is an indicator that something is wrong with the patient's lungs. To learn more about what is happening inside the patient's body and why.

further testing may be needed.