From: Effects of laryngeal mask ventilation on postoperative atelectasis in children undergoing day surgery: a randomized controlled trial
S Group
(N = 23)
M Group
P-value
After insertion of the LMA (mmHg)
47.43 ± 5.51
39.87 ± 5.60
< 0.001
Intraoperative (mmHg)
51.83 ± 7.43
36.39 ± 5.34
Before removal of the LMA (mmHg)
50.83 ± 8.67
36.43 ± 5.14