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Table 2 Risk factors for empyema after diaphragmatic trauma. Trauma description

From: Risk factors for posttraumatic empyema in diaphragmatic injuries

Variable

Total

Empyema

 

p

No

Yes

Thoracic AIS

   

0.111

 ≤ 3, n (%)

190 (81.6)

179 (83.6)

11 (57.9)

 

 > 3, n (%)

43 (18.4)

35 (16.4)

8 (42.1)

 

Abdominal AIS

   

0.6702

 ≤ 3, n (%)

124 (53.2)

113 (52.8)

11 (57.9)

 

 > 3, n (%)

109 (46.8)

101 (47.2)

8 (42.1)

 

ATI

   

0.1991

 < 15, n (%)

104 (44.6)

99 (46.3)

5 (26.3)

 

 15–24, n (%)

61 (26.2)

55 (25.7)

6 (31.6)

 

 ≥ 25, n (%)

68 (29.2)

60 (28.0)

8 (42.1)

 

Organ injured

    

 Any hollow viscus, n (%)

122 (52.4)

108 (50.5)

14 (73.7)

0.0522

 Stomach, n (%)

76 (32.6)

66 (30.6)

10 (52.6)

0.0522

 Duodenum, n (%)

11 (4.7)

10 (4.7)

1 (5.2)

1.0001

 Small bowel, n (%)

46 (19.4)

41 (19.1)

5 (26.3)

0.5461

 Colon, n (%)

62 (26.6)

56 (26.2)

6 (31.6)

0.5951

 Liver, n (%)

68 (29.2)

63 (29.4)

5 (26.3)

1.0001

 Spleen, n (%)

69 (29.6)

61 (28.5)

8 (42.1)

0.2931

Abdominal contamination, n (%)

   

0.1671

 No hollow viscus injured

111 (47.6)

106 (49.5)

5 (26.3)

 

 Perforation. No visible contamination

36 (15.5)

32 (15.0)

4 (21.1)

 

 Contamination of a quadrant

39 (16.8)

34 (16.0)

5 (26.3)

 

 More than one quadrant contamination

46 (19.8)

41 (19.2)

5 (26.3)

 

Location of the diaphragmatic wound

   

0.5221

 Left, n (%)

151 (65.1)

139 (65.2)

12 (63.2)

 

 Right, n (%)

69 (29.7)

64 (30.1)

5 (26.3)

 

 Bilateral, n (%)

12 (5.2)

10 (4.7)

2 (10.5)

 

AAST severity of the diaphragmatic trauma

   

0.5351

 < 2

26 (11.2)

25 (11.7)

1 (5.3)

 

 2

179 (76.8)

162 (75.7)

17 (89.4)

 

 > 2

28 (12.0)

27 (12.6)

1 (5.3)

 

Laparoscopic treatment

23 (9.9)

23 (10.8)

0 (–)

0.2301

Thoracic procedure

   

0.0261

 Chest tube

144 (61.8)

137 (64.0)

7 (36.8)

 

 Transdiaphragmatic lavage

52 (22.3)

42 (19.6)

10 (52.6)

 

 Thoracotomy or thoracoscopy

29 (12.4)

28 (13.2)

1 (5.3)

 

 Chest tube + irrigation

8 (3.4)

7 (3.3)

1 (5.3)

 
  1. AIS, abbreviated injury scale; ATI, abdominal trauma index; AAST, The American Association for the Surgery of Trauma
  2. 1Fisher’s exact test
  3. 2Chi2