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Table 3 Characteristic analysis of the numerical risk factors associated with post-extubation negative pressure pulmonary edema (NPPE)

From: Characterizing post-extubation negative pressure pulmonary edema in the operating room—a retrospective matched case-control study

Numerical variables

Case

Matched controls

P value

Age

45.1 ± 18.1

49.4 ± 19.7

0.065

Body mass index

24.6 ± 7.6

25.1 ± 5.3

< 0.001*

Duration of operation (min)

167.2 ± 103.8

148.4 ± 92.1

0.022*

Intraoperative morphine (mg)

2.0 ± 2.9

3.1 ± 9.6

0.247

Intraoperative fluid (ml)

1456.3 ± 906.3

1040.4 ± 947.5

< 0.001*

Intraoperative urine output (ml)

256.3 ± 394.5

147.8 ± 286.8

0.004*

Estimated blood loss (ml)

156.3 ± 272.4

128.3 ± 272.8

0.091

  1. Data were analyzed by Wilcoxon signed-rank test and are shown as mean ± SD. *P < 0.05 is considered statistically significant
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Perioperative Medicine

ISSN: 2047-0525