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Table 3 High frequency percussive ventilation (HFPV) setting

From: Haemodynamics and oxygenation improvement induced by high frequency percussive ventilation in a patient with hypoxia following cardiac surgery: a case report

  HFPV post 2 hours HFPV post 6 hours HFPV post 12 hours
Percussive rate(rate/min) 650 650 650
Convective rate(rate/min) 5 5 5
PEEP (cm H2O) 14 14 14
PIP (cm H2O) 46 46 43
MArP (cm H2O) 16 16 13
IT (sec) 2,0 1,9 2,1
ET (sec) 10.8 10.9 10.7
I:E 1:7.0 1:6.9 1:7.1
i:e 1:1 1:1 1:1
FiO2(%) 1 0.8 0.6
  1. The high peak inspiratory pressure (PIP) level does not indicate a very high-pressure level, because the sample point is on the patient, directly connected with the endotracheal tube. PIPs at the carina are approximately one-third the level set on the HFPV. In the conventional ventilators the sampling point is inside the ventilator, 1.80 m away from the patient, the mean airway pressure (MArP) measure depends on the dissipated energy through the ventilator tubes.
  2. PEEP, positive end expiratory pressure.