Assessment of the ERCTO Score for Predicting Success in Retrograde Chronic Total Occlusion Percutaneous Coronary Interventions in the PROGRESS-CTO Registry

The retrograde strategy is a common approach used in complex chronic total occlusion (CTO) percutaneous coronary intervention (PCI). The ERCTO Retrograde score is a tool that aims to predict the likelihood of technical success for retrograde CTO PCI procedures by evaluating 5 parameters: calcification, distal opacification, proximal tortuosity, collateral connection classification, and operator volume.