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Table 5 Lung US finding. Data shown as number (percentage) of patients

From: Comparative study between volume-controlled ventilation and pressure-controlled ventilation in prevention of postoperative pulmonary atelectasis in morbidly obese patients undergoing laparoscopic gastric sleeve surgery

Lung US finding Group (V), VCV (n = 26) Group (P), PCV (n = 26) χ 2 p value
Immediate postoperative
Normal 8 (30.8%) 10 (38.5%) 0.143 0.368
Abnormal 18 (69.2%) 16 (61.5%)
Absent A-lines 10 (38.5%) 8 (30.8%)
Presence B-lines 14 (53.8%) 12 (46.2%)
Lung pulse 14 (53.8%) 12 (46.2%)
After 12 h
Normal 10 (38.5%) 12 (46.2%) 0.513 0.282
Abnormal 16 (61.5%) 14 (53.8%)
Absent A-lines 7 (26.9%) 5 (19.2%)
Presence B-lines 12 (46.2%) 11 (42.3%)
Lung pulse 12 (46.2%) 11 (42.3%)
After 24 h
Normal 12 (46.2%) 14 (53.8%) 0.328 0.325
Abnormal 14 (53.8%) 12 (46.2%)
Absent A-lines 6 (23.1%) 5 (19.2%)
Presence B-lines 9 (34.6%) 8 (30.8%)
Lung pulse 9 (34.6%) 8 (30.8%)
  1. This table shows no statistically significant difference between groups according to lung US finding
  2. χ2 chi-square test, PCV pressure-controlled ventilation, VCV volume-controlled ventilation
  3. p value > 0.05 NS
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