What should be considered when measuring inhalation (Vti) and exhalation (Vte) volumes of ventilators with an intentional leak?
For precise measurement of the tidal volumes, the leak flow must be compensated. An intentional leak, at the patient’s mouth, falsifies the inhalation and exhalation volumes. Intential leaks are common in non-invasive ventilators for CO2 washout. The leakage current, which corresponds to an offset, must first be measured with a gas flow analyzer and then compensated in the measuring device. Find out how this works in this video.
Temperature influence in flow and volume measurement
In mechanical ventilators, the inspiratory and expiratory volumes (Vti, Vte) and minute volumes (Vi and Ve) must be precisely checked using gas flow analyzers or
