Mid‐Term Efficacy and Safety of Mechanical Circulatory Support in High‐Risk Elective Chronic Total Occlusion Percutaneous Coronary Intervention: A Prospective Propensity‐Matched Cohort Study

MCS-supported CTO-PCI improves technical success rates and complete revascularization achievement rates during the index procedure. However, MCS is associated with a significantly higher incidence of in-hospital MACE and device-related complications, despite showing no significant difference in 1-year MACE rates compared to conventional CTO-PCI.