Spirometer is an apparatus that measures the capacity of lungs. It is used to perform pulmonary function tests (PFT). The device specifically measures volume and speed (flow) of air inhaled and exhaled by lungs during breathing. Spirometers are helpful in assessing respiratory disorders such as asthma, emphysema, and bronchitis by inspecting ventilation i.e., obstructive and restrictive patterns of a lung. The airflow is measured by ultrasonic waves and Doppler effect technology. Recent ... Read more

Spirometer is an apparatus that measures the capacity of lungs. It is used to perform pulmonary function tests (PFT). The device specifically measures volume and speed (flow) of air inhaled and exhaled by lungs during breathing. Spirometers are helpful in assessing respiratory disorders such as asthma, emphysema, and bronchitis by inspecting ventilation i.e., obstructive and restrictive patterns of a lung. The airflow is measured by ultrasonic waves and Doppler effect technology. Recent ... Read more