<prompt> Which of the following ventilation mode reduces work of breathing by overcoming resistance created by ventilator tubingControlled mandatory ventilationSynchronised intermittent mandatory breathAssist control modePressure support mode  <response>: For the spontaneously breathing patient, pressure support ventilation PSV has been advocated to limit barotrauma and to decrease the work of breathing. Airway pressure support is maintained until the patients inspiratory flow falls below a certain cutoff. PSV is frequently the mode of choice in patients whose respiratory failure is not severe and who have an adequate respiratory drive. 