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Table 3 Trigger gradient across the CBRN filter (cm H2O)

From: Impact of adding a filter for protection from toxic inhalational compounds to the ventilation circuit of mechanically ventilated patients

Pressure generated proximal to filter Pressure measured distal to filter Pressure gradient across filter
−0.72 −0.50 0.22
−0.78 −0.43 0.35
−0.86 −0.63 0.23
−1.27 −0.78 0.49
−1.30 −1.11 0.19
−1.53 −1.32 0.21
−1.65 −1.21 0.44
−1.90 −1.36 0.54
−2.37 −1.66 0.71
−2.54 −1.57 0.97
−3.07 −1.68 1.39
−4.04 −2.65 1.39
Mean: −1.84 Mean: −1.24 Mean: 0.59