AngiographiC Evaluation of the Everolimus-Eluting Stent in Chronic Total Occlusions - the ACE-CTO Study

Inclusion Criteria: 1. Age \> 18 years old 2. Successful treatment of a native coronary artery CTO (defined as a lesion with 100% angiographic stenosis that is at least 3 months old as estimated by clinical information, sequential angiographic information, or both) using everolimus-eluting stents 3. Able and willing to return for angiographic follow-up after 8 months and to be followed clinically for 12 months 4. Agree to participate and provide informed consent Exclusion Criteria: 1. Planned non-cardiac surgery within the following 12 months 2. Recent positive pregnancy test, breast-feeding, or possibility of a future pregnancy 3. Coexisting conditions that limit life expectancy to less than 12 months 4. Patients who have a creatinine above 2.5 mg/dL (unless they require hemodialysis, in which case they are eligible to participate) 5. History of an allergic reaction or significant sensitivity to everolimus