Abstract
Chronic total occlusions (CTOs) represent a common lesion subset observed in patients who undergo coronary angiography. During the past decade, the interest of the interventionist community in CTOs has exponentially grown with fast advancement in dedicated equipment and techniques, which has resulted in high rates of procedural success and low rates of complications. Although different observational studies have shown that CTO revascularization was associated with good clinical outcome, its real benefit for patients remains to be determined, particularly in the absence of randomized trials. In addition, compared with non-CTO lesions, the American and European guidelines downgraded percutaneous coronary intervention in the setting of CTOs. In this viewpoint, we try to identify patients who would benefit from CTO recanalization, and discuss the issues that might improve the appropriateness of CTO percutaneous coronary intervention.
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