Wu et al developed a score for predicting gangrenous cholecystitis. This is a modification of the score of Yacoub et al. The authors are from Saint Agnes Hospital and Morgan State University in Baltimore.
Patient selection: acute cholecystitis
Outcome: gangrenous cholecystitis (GC)
Parameter:
(1) heart rate in beats per minute
(2) white blood cell (WBC) count per µL
(3) gallbladder wall thickness in mm
(4) age in years
Parameter
Finding
Points
heart rate
<= 90 beats per minute
0
> 90 beats per minute
1
WBC count
<= 13,000 per µL
0
> 13,000 per µL
1
gallbladder wall thickness
<= 4.5 mm
0
> 4.5 mm
1
age in years
<= 45 years
0
46 to 65 years
1
> 65 years
2
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 5
• The higher the score the greater the risk of gangrenous cholecystitis.
Total Score
Risk of GC
0
2%
1
5%
2
11%
3
23%
4
42%
5
63%
Performance:
• The area under the ROC curve was 77%.
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