Ain-Shams Journal of Anesthesiology

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

Data presented as mean ± SD
FEV1 forced expiratory volume in the first second, FVC forced vital capacity, t independent sample t test; #x² chi-square test
p value > 0.05 NS; *p value < 0.05 S; **p value < 0.001 HS

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