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

Ain-Shams Journal of Anesthesiology

Table 7 Comparison between group A: VCV and group B: PCV-VG according to lung US finding

Lung US finding	Group A: VCV (n = 30)	Group B: PCV-VG (n = 30)	x²	p value
Intraoperative 30 min
Normal	8 (26.7%)	14 (46.7%)	2.540	0.111
Abnormal	22 (73.3%)	16 (53.3%)	2.540	0.111
Absent A-lines	12 (40%)	10 (33.3%)	0.285	0.593
Presence B-lines	14 (46.7%)	11 (36.7%)	0.607	0.436
Lung pulse	17 (56.7%)	10 (33.3%)	3.263	0.0708
Immediate postoperative
Normal	9 (30.0%)	11 (36.7%)	0.298	0.585
Abnormal	21 (70.0%)	19 (63.3%)	0.298	0.585
Absent A-lines	11 (36.7%)	9 (30.0%)	0.298	0.585
Presence B-lines	16 (53.3%)	14 (46.7%)	0.257	0.612
Lung pulse	16 (53.3%)	14 (46.7%)	0.257	0.612
After 2 h
Normal	10 (33.3%)	12 (40%)	0.285	0.593
Abnormal	20 (66.7%)	18 (60%)	0.285	0.593
Absent A-lines	7 (23.3%)	5 (16.7%)	0.402	0.526
Presence B-lines	14 (46.7%)	13 (43.3%)	0.069	0.793
Lung pulse	13 (43.3%)	12 (40%)	0.066	0.797
After 6 h
Normal	11 (36.7%)	14 (46.7%)	0.607	0.436
Abnormal	19 (63.3%)	16 (53.3%)	0.607	0.436
Absent A-lines	8 (26.7%)	6 (20.0%)	0.360	0.548
Presence B-lines	14 (46.7%)	13 (43.3%)	0.069	0.793
Lung pulse	14 (46.7%)	13 (43.3%)	0.069	0.793