Chen et al developed a simple score for predicting the risk of severe coronary artery disease (CAD) in a patient prior to elective coronary angiography. The authors are from Fudan University and Tongji University in Shanghai.
Patient selection: stable angina
Parameter:
(1) aortic valve calcification
(2) ECG
(3) diabetes
(4) gender
(5) hyperlipidemia
(6) LDL-C in mmol/L
(7) HDL-C in mmol/L
(8) age in years
Parameter
Finding
Points
aortic valve calcification
no
0
yes
3
ECG
normal
0
abnormal
3
diabetes
no
0
yes
2
gender
female
0
male
2
hyperlipidemia
no
0
yes
2
LDL-C
< 1.8 mmol/L
0
1.8 to 2.2 mmol/L
1
> 2.2
2
HDL-C
>1.2 mmol/L
0
1.0 to 1.2 mmol/L
1
< 1.0 mmol/L
2
age in years
< 65 years
0
>= 65 years
2
where:
• The point assignment overlapped for LCL-C at 2.2 and HDL-C at 1.2.
total score =
= SUM(points for all 8 parameter)
Interpretation:
• minimum score: 0
• maximum score: 18
• The higher the score the greater the risk of severe CAD at angiography.
