Maquet-Getinge Critical Care



NAVA (Neurally Adjusted ventilatory Assist) is a unique approach to mechanical ventilation rates based on neural respiratory output. With NAVA, the program caught the electrical activity of the diaphragm which is supported by the respirator and is used to help the patient breathe through their own efforts with the patient, depending on its category and weight.

NAVA and the breathing process
1) The brain’s respiratory center sends a signal...
2) ...which travels via the phrenic nerve and...
3) ...excites the diaphragm.
4) The Edi catheter captures the electrical activity of the diaphragm.
5) The SERVO-i ventilator uses the Edi signal to synchronize ventilation to the patient’s breathing effort.