These devices are essential for assessing the functioning of the lungs, helping to diagnose and monitor conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory disorders. By conducting spirometry tests, healthcare professionals can evaluate a variety of lung functions, including the speed of breathing, the amount of air a person can inhale and exhale, and how effectively the lungs deliver oxygen to the blood. Modern spirometers are designed to be user-friendly, providing accurate and immediate results that are vital for developing effective treatment plans and monitoring the progression of respiratory conditions.