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Background  Among patients treated with percutaneous coronary intervention for chronic total occlusion ( CTO ‐ PCI ), patients on long‐term hemodialysis are at significantly high risk for cardiovascular mortality and morbidity. However, clinical or angiographic predictors that might aid in better patient selection remain unclear. We aimed to assess the acute impact of hemodialysis in patients who underwent  CTO ‐ PCI .    Methods and Results  The Retrograde Summit registry is a multicenter, prospective registry of patients undergoing  CTO ‐ PCI  at 65 Japanese centers. Patient characteristics and procedural outcomes of 4749 patients were analyzed, according to the presence (n=313) or absence (n=4436) of baseline hemodialysis. A prediction model for technical failure among hemodialysis patients was also developed. The technical success rate of  CTO ‐ PCI  was significantly lower in hemodialysis than in nonhemodialysis patients (78.0% versus 89.1%,  P <0.001). The rates of in‐hospital major adverse cardiac and cerebrovascular events were similar between the 2 groups (1.6% versus 0.9%,  P =0.24). Irrespective of clinical/angiographic characteristics or previously developed scoring systems, hemodialysis independently predicted technical failure for  CTO ‐ PCI . Among hemodialysis patients, predictors of technical failure were blunt stump (odds ratio 2.45, 95% confidence interval, 1.15–5.21,  P =0.021), severe lesion calcification (odds ratio 2.50, 95% confidence interval, 1.19–5.24,  P =0.015), and absence of diabetes mellitus (odds ratio 3.15, 95% confidence interval, 1.49–6.64,  P =0.003). In hemodialysis patients without these predictors, the technical success rate was 96.2%.    Conclusions  Hemodialysis is significantly associated with technical failure. Contemporary  CTO ‐ PCI  seems feasible and safe in selected hemodialysis patients.

journal of the american heart association

Impact of Hemodialysis on Procedural Outcomes of Percutaneous Coronary Intervention for Chronic Total Occlusion: Insights From the Japanese Multicenter Registry