Kim et al proposed 2 noninvasive models for predicting cirrhosis in patients with chronic hepatitis B. The authors are from Yonsei University, Liver Cirrhosis Clinical Research Center (Seoul(, and Ajou University in Korea.
NOTE: Giannini et al reported the Platelet Count to Spleen Diameter Ratio (see Chapter 10).
Parameters:
(1) age in years
(2) platelet count in 10^9/L
(3) spleen size in cm (maximum longitudinal dimension seen on ultrasonography)
Age in Years
Points
0 to 29
0
30 to 39
1
40 to 49
2
50 to 59
3
60 to 69
4
>= 70
5
spleen platelet ratio index (SPRI) =
= (size of spleen in cm) / (platelet count in 10^(9) * 100
where:
• The platelet count value is the factor used to multiple 10^9.
age-spleen-platelet ratio index (ASPRI) =
= (points for age) + SPRI
Interpretation:
• minimum ASPRI: < 1
• maximum ASPRI: > 100
• An ASPRI < 5 excludes cirrhosis.
• An ASPRI > 12 indicates cirrhosis.
Performance:
• The positive predictive value for an ASPRI > 12 was 96%.
To read more or access our algorithms and calculators, please log in or register.
