Table 2

Ventilator settings and blood gas analysis during spontaneous breathing and during the adaptation period of NMV without oxygen

PCV VCV
IPAP (cm H2O)18.2  (2.6)
EPAP (cm H2O)2.3 (1.1)
Inspiration (%)47.8 (4.2)
BF (l/min)20.1 (2.1)
Tidal volume (ml)638.0  (32.7)
Inspiration (%)46.0 (3.8)
BF (l/min)21.4 (3.2)
Flow (l/min)50.8 (6.6)
Po 2 (kPa)10.7 (0.7)10.2 (0.8)
Pco 2 (kPa)5.1 (0.4)4.9 (0.5)
pH7.42 (0.04)7.41 (0.04)
  • VCV = volume cycled ventilation; PCV = pressure cycled ventilator; IPAP = inspiratory positive airway pressure; EPAP = expiratory positive airway pressure; BF = breathing frequency.

  • Values are mean (SD).