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Table 3 Respiratory mechanics and BTV measured at each time point

From: Pressure-controlled ventilation-volume guaranteed mode improves bronchial mucus transport velocity in patients during laparoscopic surgery for gynecological oncology: a randomized controlled study

 

T0

 

T1

 

T2

 

Variables

VCVgroup

PCV-VGgroup

VCVgroup

PCV-VGgroup

VCVgroup

PCV-VGgroup

 

N=32

N=32

N=32

N=32

N=32

N=32

VT(mL),mean (SD)

435.9(13.7)

436.2(13.4)

436.2(13.4)

430.3(16.9)

433.4(11.3)

436.2(13.4)

ETCO2(mmHg),mean(SD)

33(2.1)

32.8(2.1)

39.4(1.3)*

39.2(1.6)*

42.8(1.8)*#

42.5(2.6)*#

PIP(cmH2O),median [IQR]

13[12-14]

13 [12.3-14]

31.5 [29.3-33.8]*

23 [21.3-24]*&

32 [31-34.8]*

24 [23-25.8]*&

Pmean(cmH2O),median [IQR]

6 [5-7]

6 [6-7]

9 [8.3-9.8]*

9 [8-9]*

9.5 [9-10]*

9 [8-9]*&

RR(breath/min),median[IQR]

10.5 [10-11]

10 [10-11]

13.5 [13-14]*

13 [13-14]*

16 [15-17]*#

15 [14.3-16.8]*#

Cdyn(mL/cmH2O),median[IQR]

34 [30-36.8]

33 [30.5-34]

13 [12-14]*

18.5 [17.3-20]*&

13 [12-14]*

18 [17-19]*&

BTV(mm/min),median[IQR]

10.7[8.5-14.4]

10.4 [9.0-14.1]

6.8 [5.2-9.5]*

8.3 [6.8-11.3]

4.4 [3.3-5.9]*#

7.8[6.1-10.4]*&

  1. Data are presented as mean (SD) or median [IQR]
  2. VT Tidal volume, ETCO2 End tidal CO2, PIP Peak inspiratory pressure, P mean Mean inspiratory pressure respiratory rate, Cdyn Dynamic lung compliance, BTV Bronchial mucus transport velocity, SD Standard deviation, IQR Interquartile range, T0 Immediately after endotracheal intubation, hemodynamics and mechanical ventilation were stable, T1 1 h after pneumoperitoneum, T2 2 h after pneumoperitoneum, *P value < 0.05 compared with value of T0 in each group, # P value < 0.05 compared with value of T1 in each group & P value < 0.05 compared with the VCV group at the same time point