A new expiratory support system for resolving air trapping in lungs during mechanical ventilation: A lung model study

Expiratory automatic endotracheal tube compensation reduces dynamic hyperinflation in a physical lung model

“…An expiratory support system using a computer-controlled piston pump as a negative pressure source to augment exhalation was recently proposed to avoid air trapping [ 14 ]. This system works by matching expiratory (aspirated) and inspiratory (delivered) volumes, aiming to preserve the exponential shape of the expiratory flow pattern by using the entire duration of expiration.…”