Baber et al reported a score for predicting coronary thrombosis following percutaneous coronary intervention (PCI). The authors are from multiple institutions in the United States, Europe and Israel participating in the PARIS study (Patterns of Non-Adherence to Anti-Platelet Regimen in Stented Patients).
Patient selection: PCI
Outcome: coronary thrombotic event (CTE)
Parameters:
(1) diabetes mellitus
(2) acute coronary syndrome
(3) current smoking
(4) creatinine clearance in mL per min
(5) history of prior PCI
(6) history of prior CABG
Parameter
Finding
Points
diabetes mellitus
no
0
not insulin dependent
1
insulin dependent
3
acute coronary syndrome
no
0
yes, troponin negative
1
yes, troponin positive
2
current smoking
no
0
yes
1
creatinine clearance
>= 60
0
< 60
2
history of prior PCI
no
0
yes
2
history of prior CABG
no
0
yes
2
total score =
= SUM(points for all 6 parameters)
Interpretation:
• minimum score: 0
• maximum score: 12
Score
Risk Group
2-year Risk CTE
0 to 2
low
1.7-1.8%
3 or 4
intermediate
3.9-4.1%
>= 5
high
9.8-10%
Performance:
• The area under the ROC curve is 0.70.
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