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Table 3 Intraoperative and Postoperative Characteristics of Postoperative PE in Patients with Head and Neck Cancer and Control Group

From: Intraoperative hypotension, oliguria and operation time are associated with pulmonary embolism after radical resection of head and neck cancers: a case control study

Characteristic

Case Group(N = 28)

Control Group(N = 84)

P Value

Intraoperative data

 Operation time (h)

5.49 (2.15)

4.39 (1.74)

.007

 Operation time>4 h [No. (%)]

22 (78.6%)

43 (51.2%)

.011

 Crystalloid (ml·kg−1·h−1)

5.60 (4.47–6.68)

6.25 (4.92–8.23)

.069

 Colloid (ml·kg−1·h− 1)

1.62 (1.14–2.45)

1.88 (0–2.68)

.700

 Urine output (ml·kg−1 h− 1)

1.37 (0.73–2.21)

2.14 (1.32–3.46)

.006

 Oliguria [No. (%)]

4 (14.3%)

1 (1.2%)

.004

 Blood loss (ml·kg−1 h− 1)

0.33 (0.16–0.72)

0.43 (0.24–0.80)

.505

 Vasodilator drugs [No. (%)]

6 (21.4%)

20 (23.8%)

0.796

Postoperative data

 ICU requirement [No. (%)]

14 (50.0%)

35 (41.7%)

.441

 Length of ICU stay (days)

2.5 (1–5)

0 (0–1)

<.001

 Length of hospital stay (days)

24 (17–26)

17 (13–22)

.002

 Expense of hospital (yuan)

73,173 (6699)

37,800 (2416)

<.001

 Mortality [No. (%)]

1 (3.6%)

0 (0.0%)

.082

  1. Abbreviation: ICU Intensive care unit