From: Perioperative hypoxemia is common with horizontal positioning during general anesthesia and is associated with major adverse outcomes: a retrospective study of consecutive patients
Procedure
Number
Percent
Cranial
19
3.8%
Facial soft tissue
1
0.2%
Intra-oral
28
5.6%
Laparotomy
49
9.8%
Laparoscopy
103
20.6%
Spinal
80
16.0%
Neck (non-spinal)
26
5.2%
Breast
Extremity/pelvis
112
22.4%
Aortic
8
1.6%
Miscellaneous
46
9.2%