Huang et al reported a model for predicting strangulated small bowel obstruction (SBO). The authors are from Wenzhou Medical University in China.
Patient selection: small bowel obstruction
Parameters:
(1) body temperature in °C
(2) peritoneal irritation sign
(3) WBC count in 10^9/L
(4) ascites on CT scan
(5) small bowel wall thickness in CT scan in mm
Parameter
Finding
Points
body temperature
< 38°C
0
>= 38.0°C
78
peritoneal irritation
absent
present
112
WBC count
<= 10 * 10^9/L
> 10 * 10^9/L
65
ascites on CT scan
122
small bowel wall thickness
< 3 mm
>= 3 mm
104
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 481
• The higher the score the greater the risk of strangulation.
Score
Strangulated SBO
1.3%
65 to 142
11%
143 to 225
49%
226 to 298
86%
>= 299
100%
Performance:
• The area under the ROC curve is 0.94.
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Specialty: Gastroenterology
