Table 3 Intraoperative mechanical ventilation parameters.

After induction

Driving pressure - cm H₂O

12.5±2.4

14.2±3.7

2.557

0.012

Peak inspiratory pressure* - cm H₂O

18.3±2.6

17.4±2.5

1.665

0.102

Positive end-expiratory airway pressure - cm H₂O

4.8±1.5

4.1±1.2

2.072

0.018

Tidal volume - mL

432.7±35.4

445.8±43.0

1.560

0.122

Respiratory rate - cycle per minute

11.4±1.6

11.9±1.3

1.609

0.111

Dynamic respiratory system compliance - mL/cm H₂O

36.3±7.9

31.2±8.6

2.329

0.005

SpO₂ - %

98.5±0.8

98.3±0.7

1.248

0.215

End-tidal carbon dioxide - mm Hg

39.5±3.1

38.8±3.4

1.009

0.316

At the end of surgery

Driving pressure - cm H₂O

12.9±2.6

15.2±3.5

3.499

<0.001

Peak inspiratory pressure* - cm H₂O

18.5±2.8

19.3±2.5

1.414

0.161

Positive end-expiratory airway pressure - cm H₂O

5.1±1.7

4.6±1.5

1.463

0.147

Tidal volume - mL

441.6±38.9

468.4±45.2

2.981

0.004

Respiratory rate - cycle per minute

11.5±1.1

11.7±0.9

0.933

0.353

Dynamic respiratory system compliance - mL/cm H₂O

33.9±6.7

30.5±7.5

2.243

0.028

SpO₂ - %

97.3±1.0

96.5±1.2

3.397

0.001

End-tidal carbon dioxide - mm Hg

38.6±4.6

37.2±3.7

1.573

0.119