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Table 1 Baseline characteristics of the analyzed patient groups

From: Dysfunction of alveolar macrophages after cardiac surgery and postoperative pneumonia? - an observational study

Characteristics

Group 1 without pneumonia (n = 30)

Group 2 with pneumonia (n = 3)

P

Age, years

67 (59, 72)

79 (78, 84)

0.006a

Gender, m/f

22 (73%)/8 (27%)

2 (66%)/1 (33%)

0.88

Smoker, %

3 (10%)

0 (0%)

0.49

BMI, kg m-2

27.5 (25.5, 29.7)

26.9 (22.5, 28.03)

0.45

LVEF, %

55 (50, 60)

55 (50, 66)

0.75

Arterial hypertension, n/y

2/31

0/3

0.88

COPD, n/y

31/2

3/0

0.88

Renal insufficiency, %

2 (6.7%)

1 (33%)

0.49

Diabetes mellitus, %

6 (20%)

1 (33%)

0.75

Duration of anesthesia, minutes

270 (234, 318)

360 (330, 360)

0.019a

Duration of surgery, minutes

213 (173, 244)

275 (275, 320)

0.025a

CPB-time, minutes

73 (54, 99)

125 (101, 142)

0.030 a

Cross clamp time, minutes

41 (32, 61)

58 (40, 97)

0.235

Total ventilation time, hours

13 (11.0, 15)

24 (22, 25)

0.015a

Intraoperative blood transfusion, n/y

7 (23%)

3 (100%)

0.025a

Postoperativewound infection, %

4 (13.3%)

0 (0%)

0.75

Onset of pneumonia, postoperative day

n/a

5 (4, 5)

0.10

Sepsis, %

0 (0%)

2 (67%)

0.06

  1. Data in brackets are presented as median and IQR or absolute values. aStatistically significant (P <0.05) (Mann–Whitney U-test for independent patient groups). Patients were divided retrospectively into two groups: group 1 without postoperative pneumonia and group 2 comprising three patients who developed postoperative pneumonia. m/f, male/female; n/y, no/yes; COPD, chronic obstructive pulmonary disease; CPB, cardiopulmonary bypass; n/a, not applicable.