title: Dedicated bifurcation analysis: dedicated devices.
abstract: Percutaneous treatment of bifurcations with conventional (straight) stents has been associated with complex procedures and poor clinical outcomes. Also, several limitations including side branch ostial gap, excessive metal density in the parent vessel, incomplete stent apposition, and stent distortion/disruption have been reported with current techniques. Dedicated bifurcation stents have been designed to simplify the procedure, even in complex and challenging anatomies, and to improve acute and late outcomes. The application of conventional quantitative coronary angiography (QCA) analysis, originally designed for straight vessel analysis, in the bifurcation anatomy has resulted in inconsistent results. Also, the lack of standardized QCA method for reporting has precluded the possibility for accurate comparison between clinical trials and different techniques and devices. We review QCA results of dedicated bifurcation devices reported according new dedicated QCA segmental analysis.
authors.affiliation: Instituto Dante Pazzanese de Cardiologia, Av. Dr Dante Pazzanese, 500-Vila Mariana, São Paulo 04012-180, Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Collet
authors.forename: Ricardo A
authors.initials: RA
authors.lastname: Costa
authors.forename: Alexandre
authors.initials: A
authors.lastname: Abizaid
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation*; D017023:Coronary Angiography / Q000592:standards; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D023903:Coronary Restenosis / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D015588:Observer Variation; D011237:Predictive Value of Tests; D011474:Prosthesis Design; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000592:standards; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D012984:Software; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome