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Table 5 Comparison of postoperative hypoxemia rates for the 2012 and 2015 patient cohorts

From: Evaluation of operating room reverse Trendelenburg positioning and its effect on postoperative hypoxemia, aspiration, and length of stay: a retrospective study of consecutive patients

 

2012

2015

p value

Patients

500

1000

 

Postoperative hypoxemia

128 (25.6%)

181 (18.1%)

0.0007

Preoperative risk

 Age

54 ± 17

57 ± 17

0.0021

 Age ≥ 75 years

62 (12.4%)

186 (18.6%)

0.0023

 ASA classification

2.8 ± 0.7

2.9 ± 0.6

0.0323

 ASA classification 3 or 4

359 (71.8%)

771 (77.1%)

0.0248

 Emergency procedures

36 (7.2%)

87 (8.7%)

0.3182

 Preexisting lung disease

69 (13.8%)

153 (15.3%)

0.4406

 Weight (kg)

86 ± 24

86 ± 24

0.9357

Intraoperative risk

 Operating room minutes

129 ± 77

128 ± 73

0.8031

 Glycopyrrolate on induction

119 (23.8%)

248 (24.8%)

0.6711

 Fluid input (L)

1.8 ± 1.2

1.5 ± 1.0

0.0001

  1. ASA American Society of Anesthesiologists
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Perioperative Medicine

ISSN: 2047-0525