Percutaneous Recanalization of Chronically Occluded Coronary Arteries

医学 经皮 冠状动脉 心脏病学 经皮冠状动脉介入治疗 内科学 放射科 动脉 心肌梗塞
作者
Gregg W. Stone,David E. Kandzari,Roxana Mehran,Antonio Colombo,Robert S. Schwartz,Steven R. Bailey,Issam Moussa,Paul S. Teirstein,George Dangas,Donald S. Baim,Matthew R. Selmon,Bradley H. Strauss,Hideo Tamai,Takahiko Suzuki,Kazuaki Mitsudo,Osamu Katoh,David A. Cox,Angela Hoye,Gary S. Mintz,Eberhard Grube
出处
期刊:Circulation [Ovid Technologies (Wolters Kluwer)]
卷期号:112 (15): 2364-2372 被引量:493
标识
DOI:10.1161/circulationaha.104.481283
摘要

R emarkable progress in the percutaneous management of coronary artery disease has been achieved over the last decade.The scaffolding properties of coronary stents have resulted in percutaneous coronary intervention (PCI) becoming a predictable procedure, with reduced rates of acute closure and late restenosis compared with balloon angioplasty alone. 1,2More recently, the site-specific delivery of antiproliferative agents from drug-eluting stents has been demonstrated to markedly attenuate vascular responses leading to neointimal hyperplasia, further reducing the occurrence of clinical and angiographic restenosis to Ͻ10% in most patients. 3,4][7] With these advances in perspective, it is often stated that successful recanalization of chronic total occlusions (CTOs) of native coronary arteries represents the "last frontier" of PCI.This statement is made in deference to the fact that CTOs represent the most technically challenging lesion subset that interventional cardiologists face, with procedural success rates considerably lower than those achieved in nonoccluded coronary vessels or acutely occluded arteries.Moreover, no consensus exists with regard to the definition of CTO, the factors related to procedural failure and/or complications, and the optimal technical approach.Indeed, until recently, the clinical benefits of PCI in CTOs had not been demonstrated.An international panel of 47 physicians from 9 countries was therefore convened in New York City for 2 days in January 2004, the purpose of which was to reach consensus on the current state of the art of CTO angioplasty (see Appendix in the online-only Data Supplement for a complete participant list).This goal was approached through a series of didactic lectures, roundtable discussions, breakout focus groups, and the performance of 14 live case demonstrations of CTO angioplasty by many of the world's most skilled operators in this subspecialty.The present report represents a synthesis of the findings from this meeting and also incorporates a literature review from the field of CTO intervention.Topics covered in Part I of this review include definitions, prevalence, and clinical presentation of CTOs; the anatomy and histopathology of coronary occlusions; experimental CTO models; and the clinical relevance and rationale for CTO revascularization.Part II will review the technical approach to and clinical outcomes after percutaneous intervention of CTOs and describe the novel devices and drugs approved and undergoing investigation for CTO recanalization.
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