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Background:  To date, the benefit of successful revascularization of chronic total occlusions (CTOs) on prognosis remains uncertain, and there is a paucity of data on the impact of successful revascularization for CTO patients on long-term cardiovascular survival. This study aimed to investigate the long-term cardiovascular survival for patients with successful and unsuccessful CTO revascularization in a large cohort of patients.   Methods:  There were 1,655 consecutive patients with at least one CTO included and were grouped into successful revascularization ( n  = 591) and unsuccessful revascularization ( n  = 1,064). Propensity score matching (PSM) was carried out to balance the clinical and the angiographic characteristics. Cardiac mortality was defined as the primary endpoint. Major adverse cardiac event (MACE) was assessed as a “secondary endpoint.”   Results:  After 3.6 years of follow-up, there was no significant difference between the successful and the unsuccessful revascularization groups in the rate of cardiac mortality [adjusted hazard ratio (HR) 0.96, 95% confidence interval (CI) 0.59–1.58,  p  = 0.865]. After the PSM analysis (371 pairs) between the two groups, the cardiac mortality rate values (HR 0.51, 95% CI 0.23–1.15,  p  = 0.104) were equivalent, whereas the adjusted risk of MACE (HR 0.43, 95% CI 0.32–0.58,  p  = 0.001) and target-vessel revascularization (HR 0.41, 95% CI 0.29–0.58,  p  < 0.001) were significantly higher in patients with unsuccessful revascularization.   Conclusion:  For the treatment of CTO patients, successful revascularization was not associated with a lesser risk for cardiac mortality as compared with unsuccessful revascularization. However, successful revascularization reduced MACE and target-vessel revascularization.

Long-Term Outcomes of Successful Revascularization for Patients With Coronary Chronic Total Occlusions: A Report of 1,655 Patients