NAV-ALI: Neurally Adjusted Ventilatory Assist in Patients Recovering Spontaneous Breathing After Acute Lung Injury

NAV-ALI: Effects of Different Levels of Neurally Adjusted Ventilatory Assist (NAVA) in Patients Recovering Spontaneous Breathing After Acute Lung Injury: A Physiological Evaluation.

Evaluation of a new ventilatory mode Neurally Adjusted Ventilatory Assist "NAVA" in patients who recover spontaneous breathing after acute lung injury.

Physiological evaluation of two modes of mechanical ventilation: Neurally Adjusted Ventilatory Assist (NAVA) vs Pressure Support Ventilation, at different levels of ventilator assistance.

Evaluation in term of physiological parameters: Tidal volume, Respiratory rate, Inspiratory effort, PaCO2, evaluation of subject-ventilator synchrony.

Evaluation of physiological response to varying levels of ventilator assistance.

Inclusion Criteria:

• Age > 18 years
• Hospitalized in intensive care unit
• Acute Lung Injury
• Intubated or tracheotomized and mechanically ventilated

Exclusion Criteria:

• Hemodynamic instability
• Absence of consent