CASTLE score versus J-CTO score for the prediction of technical success in chronic total occlusion percutaneous revascularisation

Aims: We sought to compare the efficiency of the novel EuroCTO (CASTLE) score with the commonly used Multicentre CTO registry in Japan (J-CTO) score in predicting procedural success of percutaneous recanalization (PCI) for coronary chronic total occlusions (CTOs). Methods and results: We evaluated 660 consecutive CTO PCIs (mean age: 66±11 years, 84% male). The mean J-CTO and EuroCTO (CASTLE) scores were 1.86 ± 1.2 and 1.74 ± 1.2, respectively. Antegrade wire escalation, antegrade dissection re-entry and retrograde approach were used in 82%, 14% and 37% of cases, respectively. Receiver-operator characteristic analysis demonstrated equal overall discriminatory capacity between the two scores (AUC: 0.698, 95%CI: 0.653-0.742 p