Table 1 Clinical characteristics of SISMAD (N = 110)

Comorbidities

 Hypertension

43 (39.1)

 Liver-relative disease

15 (13.6)

  Chronic hepatitis B

7 (6.4)

  Hepatic adipose infiltration

6 (5.5)

  Alcoholic liver disease

1 (0.9)

  Hepatic insufficiency

1 (0.9)

 Lung mass

4 (3.6)

 Gout

4 (3.6)

 Sinus bradycardia

4 (3.6)

 Right bundle branch block

2 (1.8)

 Hyperlipemia

2 (1.8)

 Diabetes mellitus

0 (0.0)

 Smoking

46 (41.8)

 Alcohol consumption

34 (30.9)

Clinical symptoms

  Duration (d)

    0.04–60

1 (0.4–3.0)

  Abdominal pain

104 (94.5)

  Back pain

6 (5.5)

  Low back pain

6 (5.5)

  Chest pain

2 (1.8)

  Systolic pressure ≥ 140 mmHg during the first hospital visit

59 (53.6)

  Diastolic pressure ≥ 90 mmHg during the first hospital visit

55 (50.0)

Acute abdomen

35 (31.8)

  Urinary calculi

14 (12.7)

  Gallstone/cholecystitis

9 (8.2)

  Intestinal obstruction

8 (7.3)

  Bowel necrosis

4 (3.6)

  Ischemic enteropathy

3 (2.7)

  Appendicitis

2 (1.8)

  Acute gastroenteritis

2 (1.8)

  Others*

3 (2.7)