légzésfunkciócsökkenést

Légzésfunkció or pulmonary function refers to the assessment of the lungs' ability to inhale and exhale air and to exchange oxygen and carbon dioxide. It is typically measured through a series of tests known as pulmonary function tests (PFTs). These tests are non-invasive and provide valuable information about the health and function of the respiratory system.

The primary goal of légzésfunkció assessment is to diagnose and monitor respiratory diseases, such as asthma, chronic obstructive pulmonary disease (COPD), emphysema, and interstitial lung disease. It can also help evaluate the effectiveness of treatments and predict the likelihood of complications after surgery.

Commonly measured parameters include forced vital capacity (FVC), which is the maximum amount of air a person can forcibly exhale after taking a deep breath, and forced expiratory volume in one second (FEV1), the amount of air exhaled in the first second of this maneuver. The ratio of FEV1 to FVC (FEV1/FVC) is a key indicator used to differentiate between obstructive and restrictive lung diseases. Other tests may assess lung volumes, diffusion capacity, and airway resistance.

Légzésfunkció testing is usually performed in a clinical setting by trained professionals. Patients are often asked to breathe into a device called a spirometer. It is important for individuals to follow the instructions carefully to ensure accurate results. Normal values vary based on age, sex, height, and ethnicity. Deviations from these normal values can indicate underlying lung abnormalities.