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Figure 3 | Critical Care

Figure 3

From: Clinical review: Update on neurally adjusted ventilatory assist - report of a round-table conference

Figure 3

Change in neurally adjusted ventilatory assist according to maximum diaphragmatic electrical activity during spontaneous breathing. Electrical activity of the diaphragm (EAdi) values during 1 hour, each point representing the mean value over 1 minute. EAdi variations occurred before, during, and after a spontaneous breathing trial (SBT). Maximum EAdi was 21 μV after a SBT of 3 minutes and allowed a reduction in the neurally adjusted ventilatory assist (NAVA) level from 2.4 to 2.2 cmH2O/μV in order to obtain EAdi values after the SBT of about 13 μV (60% of maximum EAdi). Arterial blood gases were not changed by the NAVA level modification.

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