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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