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Table 6 Perioperative pulmonary aspiration (POPA) associations

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

 

POPA (No)

POPA (Yes)

p value

Patients

1448 (96.5%)

52 (3.5%)

95% CI: 2.7–4.5%

 

Adverse outcomes

 Mortality

5 (0.4%)

4 (7.7%)

0.0004

 Postoperative length of stay (days)

2.3 ± 3.0

8.8 ± 6.7

< 0.0001

Preoperative risk

 Age

60 ± 17

64 ± 18

0.0012

 Age ≥ 75 years

230 (15.9%)

18 (34.6%)

0.0004

 ASA classification

2.8 ± 0.6

3.1 ± 0.6

0.0004

 ASA classification 3 or 4

1084 (74.9%)

46 (88.5%)

0.0254

 Emergency procedures

113 (7.8%)

10 (19.2%)

0.0032

 Preexisting lung disease

210 (14.5%)

12 (23.1%)

0.0871

 Weight (kg)

86 ± 24

82 ± 24

0.1397

Intraoperative risk

 Operating room minutes

126 ± 71

190 ± 114

0.0002

 Glycopyrrolate on induction

354 (24.5%)

13 (25.0%)

0.9274

 Fluid input (L)

1.6 ± 0.9

2.9 ± 2.4

0.0003

  1. ASA American Society of Anesthesiologists, CI confidence interval