Reduced inspiratory resistance.
Better lung compliance with warm and humidified gas.RAM Cannula
Used with a ventilator
Can apply PIP, PEEP, and rate in a noninvasive manner.
Higher support pressures are needed compared to intubated patients.
Neurally Adjusted Ventilator Assist (NAVA)
Can be invasive or non-invasive (when delivered via RAM cannula)
Ventilator mode that uses the brain/phrenic nerve/diaphragm axis to trigger the
ventilator and to determine ventilator support delivered to patient.
The electrical activity of the diaphragm (Edi) triggers and controls the ventilator
support.
When to initiate a breath
Size of breath to deliver
When to stop breath
NAVA: Patient thinks of initiating breath and it is delivered.
Conventional ventilation: Flow or pressure is needed to trigger a breath
Benefits of NAVA:
Patient has more control of ventilator – better patient-ventilator synchrony.
Decreased risk of barotrauma and volutrauma.
Patient able to cough more effectively
Atrophy of diaphragm is reduced.