Singh et al reported a new version of a risk score for patients undergoing percutaneous coronary intervention (PCI). The authors are from the Mayo Clinic in Rochester.
Patient selection: PCI
Outcome: in-hospital mortality
Parameters:
(1) age in years
(2) serum creatinine in mg/dL
(3) left ventricular ejection fraction in percent
(4) preprocedural cardiogenic shock
(5) myocardial infarction <= 24 hours
(6) CHF on presentation (without AMI or shock)
(7) peripheral artery disease
|
Parameter |
Finding |
Points |
|
age in years |
< 38 |
2 |
|
|
38 to 48 |
1 |
|
|
49 to 65 |
0 |
|
|
66 to 72 |
1 |
|
|
73 to 79 |
2 |
|
|
80 to 86 |
3 |
|
|
>= 87 |
4 |
|
serum creatinine |
< 0.7 |
1 |
|
|
0.7 to 1.1 |
0 |
|
|
1.2 to 1.4 |
1 |
|
|
1.4 to 1.8 |
2 |
|
|
1.8 to 3.9 |
3 |
|
|
> 3.9 |
4 |
|
LVEF |
>= 45% |
0 |
|
|
30.6 to 44% |
1 |
|
|
19 to 30.5% |
2 |
|
|
< 19% |
3 |
|
cardiogenic shock |
no |
0 |
|
|
yes |
9 |
|
AMI <= 24 hours |
no |
0 |
|
|
yes |
4 |
|
CHF on presentation (without shock or AMI) |
no |
0 |
|
|
yes |
3 |
|
peripheral artery disease |
no |
0 |
|
|
yes |
2 |
where:
• The cutoffs are approximated from Figure 1. Slightly different ranges are shown in Table 2.
total score =
= SUM(points for all 7 parameters)
Interpretation:
• minimum score: 0
• maximum score: 26
log(odds ratio for death) =
= (0.342 * (score)) - 6.535
|
Score |
Risk Category |
|
0 to 5 |
very low |
|
6 or 7 |
low |
|
8 to 10 |
moderate |
|
11 or 12 |
high |
|
>= 13 |
very high |
Specialty: Cardiology
