Related Experiment Video
Updated: Jun 4, 2026

3D Cine Magnetic Resonance Imaging of Respiratory Motion in Mechanically Ventilated Mice and Rats
Published on: September 19, 2025
[Neurally adjusted ventilatory assist: a revolution of mechanical ventilation?]
Lise Piquilloud1, Philippe Jolliet, Didier Tassaux
1Service de médecine intensive adulte et Centre des brûles, CHUV, 1011 Lausanne. lise.piquilloud@chuv.ch
Abstract:
Neurally adjusted ventilatory assist or NAVA is a new assisted ventilatory mode which, in comparison with pressure support, leads to improved patient-ventilator synchrony and a more variable ventilatory pattern. It also improves arterial oxygenation. With NAVA, the electrical activity of the diaphragm is recorded through a nasogastric tube equipped with electrodes. This electrical activity is then used to pilot the ventilator. With NAVA, the patient's respiratory pattern controls the ventilator's timing of triggering and cycling as well as the magnitude of pressurization, which is proportional to inspiratory demand. The effect of NAVA on patient outcome remains to be determined through well-designed prospective studies.
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