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Table 3 Comparison between group A: VCV and group B: PCV-VG according to the preoperative spirometer

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

Lung volumes Group A: VCV (n = 30) Group B: PCV-VG (n = 30) t/x2# p value
FEV1 2.38 ± 0.7 2.48 ± 0.5 0.637 0.526
FVC 3.36 ± 0.8 3.5 ± 0.8 0.678 0.5
FEV1/FVC (%) 71.4 ± 10.3 74 ± 11 0.945 0.348
TLC 5.4 ± 1.0 5.3 ± 1.2 -0.351 0.727
  1. Data presented as mean ± SD
  2. FEV1 forced expiratory volume in the first second, FVC forced vital capacity, t independent sample t test; #x2 chi-square test
  3. p value > 0.05 NS; *p value < 0.05 S; **p value < 0.001 HS
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