Score of Kostantinis et al for Predicting Clinical Coronary Artery Perforation During Percutaneous Coronary Intervention (PCI) for Chronic Total Coronary Occlusions (PROGRESS-CTO Perforation Score)
Kostantinis et al reported a score for predicting clinical coronary artery perforation during a percutaneous coronary intervention (PCI) for a chronic total occlusion. The authors are from multiple institutions in the United States and Turkey.
Patient selection: PCI for chronic total occlusions (TIMI flow grade 0 for >= 3 months)
Clinical perforation: any perforation requiring treatment
Parameters:
(1) age in years
(2) approach
(3) calcifications
(4) blunt/no stump (lack of tapering or lack of a funnel shape at the proximal cap)
Parameter
Finding
Points
age in years
< 65 years
0
>= 65 years
1
approach
antegrade dissection and re-entry
1
retrograde
2
antegrade
0
calcification
none or mild
0
moderate or severe
1
blunt/no stump
no
0
yes
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 5
• The higher the score the greater the risk of perforation.
Score
Risk Perforation
0
0.7%
1
1.3%
2
1.7%
3
4.6%
4
6.6%
5
11.2%
Performance:
• The area under the ROC curve is 0.74.
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