A Novel Clinical Scoring Model for Interventional Therapy in Chronic Total Occlusion of the Coronary Artery
Table 1
CTO-PCI scoring system based on clinic and angiography.
Variables
Angiographic features
Clinical features
Main disadvantages
Blunt stump
Lesion length＞20 mm
Calcification
Tortuosity1
Collateral2
LCx-CTO3
Ostial location
Distal lesion
Age (≥75)
Previous reconstruction failure4
Previous MI
J-CTO score
+
+
+
+
+
Not applicable to retrograde or hybrid technology
PROGRESS score
+
+
+
+
Variables are controversial, and the observation of lesions is ignored
Recharge score
+
+
+
+
+
+
Variables related to operator skill or experience were not included
CL score
+
+(1.5 point)
+(2.0 point)
+
+(1.5 point)
+
Not applicable to retrograde or hybrid technology centers
ORA score
+
+
+
Concluded by one operator, not considering the operator’s technology and experience
Except for the special marks, the rest is 1 point. 1In J-CTO and recharge, the angle was more than or equal to 45°, and it was moderate or severe tortuosity in PROGRESS; 2in PROGRESS, it means lack of collateral for treatment, and in ORA, it means collateral Rentrop grade <2; 3CTO of the circumflex branch in PROGRESS and CTO of non-LAD in CL; 4previously failed lesion in J-CTO, and in recharge and Cl, it means previous CABG on the target vessel.
