Table 1 Patients characteristics

Background

 Age, years^a

69 (57–82)

72 (54–85)

 Sex, male/female

37 / 63

13 / 15

 Past history of surgery (absent/present)

62 / 38

15 / 12

 Duration of symptoms before surgery, hours ^a

12 (8–21)

15 (8–26)

 ASA-PS (1/2/3)

13 / 52 / 35

5 / 14 / 8

Physical findings

 Peritoneal irritation sign (absent/present)

39 / 61

7 / 20

 Body temperature, °C^a

36.6 (36.2—36.9)

36.9 (36.6—37.1)

Laboratory data

 WBC count, 10³/L^a

9.5 (7.5—12.9)

10.0 (8.0—13.1)

 CRP, mg/L^a

0.20 (0.10—0.73)

0.18 (0.10—1.30)

 CK, U/L^a

88 (50—126)

82 (58—125)

 LDH, U/L^a

210 (181—252)

200 (176—223)

Arterial blood gas

 pH^a

7.44 (7.41—7.47)

7.44 (7.41—7.45)

 BE, mmol/L^a

0.2 (-2.4—1.4)

0.8 (-0.9—2.0)

CT findings

 Ascites (absent/present)

75 / 25

17 / 10

 Mesenteric fluid (absent/present)

73 / 27

18 / 9

 Reduced bowel wall enhancement (absent/present)

40 / 44

10 / 11

Surgery

 Small bowel resection (absent/present)

36 / 64

10 / 17

Etiology of SSBO based on surgical findings

 Adhesive disease

86 (86%)

22 (81%)

 Internal hernia

11 (11%)

5 (19%)

 Volvulus

3 (3%)

0