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Table 2 Breathing pattern, respiratory and hemodynamic variables during three pressure-controlled modes

From: Effect of inspiratory synchronization during pressure-controlled ventilation on lung distension and inspiratory effort

  PC-CMV PC-SIMV PC-IMV
Tidal volume (mL) 482 ± 107 457 ± 133 387 ± 104*,#
Tidal volume per predicted body weight (mL/kg) 7.3 ± 1.4 7.0 ± 2.1 5.9 ± 1.5*,#
Tidal volume variability (%) 13.7 ± 13.7 21.6 ± 13.1 36.0 ± 18.0*,#
Maximal P L (cmH2O) 15.5 ± 5.2 15.3 ± 5.7 13.3 ± 4.9*,#
Mean P L (cmH2O) 9.8 ± 3.0 8.8 ± 3.3γ 7.0 ± 3.0*,#
Minimum P L (cmH2O) −3.2 ± 2.8 −3.5 ± 3.4 −3.5 ± 3.2
ΔP L (cmH2O) 12.0 ± 6.9 11.9 ± 7.0 10.3 ± 4.6
Total respiratory rate (breaths/min) 22 ± 4 23 ± 6 27 ± 7*,#
Minute ventilation (L/min) 10.2 ± 2.1 9.8 ± 1.9 9.9 ± 2.0
PaO2/FiO2 ratio 216 ± 60 223 ± 55 218 ± 63
PaCO2 (mmHg) 48 ± 10 49 ± 11 50 ± 10
Arterial pH 7.37 ± 0.06 7.37 ± 0.07 7.36 ± 0.07
Mean arterial pressure (mmHg) 80 ± 10 80 ± 11 85 ± 14
Heart rate (beats/min) 96 ± 14 95 ± 13 96 ± 15
  1. PC-CMV pressure-controlled continuous mandatory ventilation, PC-SIMV pressure-controlled synchronized intermittent mandatory ventilation, PC-IMV pressure-controlled intermittent mandatory ventilation
  2. p < 0.05, PC-CMV versus PC-IMV; # p < 0.05, PC-SIMV versus PC-IMV; γ p < 0.05, PC-CMV versus PC-SIMV