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Table 2 Course of parameters over 10 h with estimated differences between groups

From: Individualized flow-controlled ventilation compared to best clinical practice pressure-controlled ventilation: a prospective randomized porcine study

 

FCV meana

PCV meana

MD with 95% CIa

p valuea

HR

/min

84.0

79.6

4.4 (−5.0 to 13.8)

0.378

MAP

mmHg

70.1

65.1

5.0 (−0.3 to 10.4)

0.093

MPAP

mmHg

21.8

22.8

−1.0 (−4.8 to 2.8)

0.615

CVP

mmHg

9.5

12.1

−2.6 (−6.1 to 0.9)

0.177

CI

l/min/m2

5.4

5.7

−0.3 (−1.0 to 0.4)

0.410

PCWP

mmHg

9.5

12.6

−3.1 (−6.5 to 0.3)

0.108

PVRI

dyn s/cm5/m2

327.2

260.2

67.0 (20.9 to 113.1)

0.017*

SVRI

dyn s/cm5/m2

1646.1

1353.0

293.1 (51.4 to 534.7)

0.039*

Pes

cm H2O

12.3

13.9

−1.6 (−3.7 to 0.5)

0.178

VT

ml/kg

8.2

7.6

0.7 (0.2 to 1.2)

0.025*

RR

/min

20.1

41.5

−21.3 (−22.8 to −19.9)

< 0.001***

Ppeak

cm H2O

16.3

17.5

−1.2 (−3.5 to 1.2)

0.350

ΔP

cm H2O

13.0

12.5

0.6 (−1.7 to 2.8)

0.638

MP

J/min

5.8

22.0

−16.2 (−21.1 to − 11.4)

< 0.001***

MV

l/min

6.0

12.7

−6.8 (−8.2 to −5.4)

< 0.001***

paCO2

Torr

40.1

44.9

−4.7 (−7.4 to −2.0)

0.006**

kPa

5.35

5.98

−0.63 (−0.99 to −0.27)

 

paO2

Torr

119.8

96.6

23.2 (9.0 to 37.5)

0.010*

kPa

15.97

12.87

3.10 (1.19 to 5.00)

 

PEEP

FCVb

PCVb

 

p valuec

5

cm H2O

1/6 (17%)

6/6 (100%)

 

0.002**

4

cm H2O

0/6 (0%)

0/6 (0%)

 

3

cm H2O

5/6 (83%)

0/6 (0%)

 

  1. CI cardiac index, CVP central venous pressure, FCV flow-controlled ventilation, HR heart rate, MAP mean arterial pressure, MD mean difference, MP mechanical power, MPAP mean pulmonary arterial pressure, MV respiratory minute volume, paCO2 arterial partial pressure of carbon dioxide, paO2 arterial partial pressure of oxygen, PCV pressure-controlled ventilation, PCWP pulmonary capillary wedge pressure, PEEP positive end-expiratory pressure, Pes esophageal pressure, Ppeak peak pressure, PVRI pulmonary vascular resistance index, RR respiratory rate, SVRI systemic vascular resistance index, VT tidal volume, ΔP driving pressure (difference between positive end-expiratory pressure and peak pressure)
  2. aEstimated mean and median difference with CI for continuous variables retrieved from linear mixed-effects model
  3. bBinary data are presented as no./total no. (%)
  4. cAssessed by Fisher’s exact test