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Table 5 Comparison between group A: VCV and group B: PCV-VG according to SaO2

From: Comparison between volume-controlled ventilation and pressure-controlled volume-guaranteed ventilation in postoperative lung atelectasis using lung ultrasound following upper abdominal laparotomies: a prospective randomized study

SaO2

Group A: VCV (n = 30)

Group B: PCV-VG (n = 30)

t test

p value

Preoperative

96.75 ± 1.45

97.16 ± 1.37

1.126

0.264

After induction

96.65 ± 1.47

97.06 ± 1.30

1.144

0.257

Immediate postoperative

95.83 ± 1.85

96.99 ± 1.45

2.703

0.009*

Postoperative at 30 min

95.81 ± 1.55

96.79 ± 1.32

2.637

0.0107*

Postoperative at 120 min

95.84 ± 2.24

96.64 ± 2.23

1.386

0.171

Postoperative at 240 min

96.10 ± 2.70

96.70 ± 2.48

0.896

0.373

Postoperative at 360 min

96.16 ± 2.29

97.02 ± 2.33

1.442

0.154

  1. Data presented as mean ± SD and numbers as appropriate
  2. Independent sample t test; p value > 0.05 NS; *p value < 0.05 S