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      Avaliação ultrassonográfica intracoronária de imagem angiográfica duvidosa durante intervenção percutânea em bifurcação Translated title: Intravascular ultrasound evaluation of equivocal angiographic imaging during percutaneous coronary intervention of bifurcation lesions

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          Abstract

          O uso do ultrassom intracoronário (USIC) para guiar o implante do stent em bifurcações, especialmente na detecção de complicações relacionadas ao procedimento, tem diminuído as taxas de desfechos clínicos maiores. Neste artigo, reportamos o caso de um paciente submetido a intervenção em bifurcação, em que o fio-guia ultrapassou inadvertidamente por trás das hastes proximais do stent, levando à deformação de sua borda. A complicação foi suspeitada na angiografia e confirmada com o USIC. O USIC foi fundamental no diagnóstico, na confirmação do reposicionamento correto do fio-guia, e na avaliação da ótima expansão e da aposição completa das hastes do stent, prevenindo possível desfecho trombótico precoce e garantindo o resultado a longo prazo.

          Translated abstract

          The use of intravascular ultrasound (IVUS) to guide stent implantation in bifurcation lesions, especially for the detection of procedure-related complications, has decreased the rates of major clinical outcomes. We report a case of a patient undergoing bifurcation intervention, where the guidewire inadvertently was passed behind the proximal stent struts, deforming the stent edge. This complication was suspected at the angiography and was confirmed by IVUS. IVUS was crucial for the diagnosis, to confirm the correct repositioning of the guidewire, and to assess the optimal expansion and complete apposition of stent struts, thus preventing a possible early thrombotic event and ensuring a good long-term outcome.

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          Most cited references11

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          Contemporary stent treatment of coronary bifurcations.

          Treatment of coronary bifurcation lesions represents a challenging area in interventional cardiology. The introduction of drug-eluting stents (DES) reduced restenosis in the main branch (MB). However, restenosis at the ostium of the side branch (SB) remains a problem. Although stenting the MB with provisional SB stenting seems to be the prevailing approach, in the era of DES various two-stent techniques emerged (crush) or were re-introduced (V or simultaneous kissing stents, crush, T, culottes, Y, skirt) to allow stenting in the SB when needed. This review describes in detail various techniques used for implantation of two stents by intention to treat.
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            Fractal geometry of arterial coronary bifurcations: a quantitative coronary angiography and intravascular ultrasound analysis

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              Assessment with optical coherence tomography of a new strategy for bifurcational lesion treatment: the Tryton Side-Branch Stent.

              The Tryton-Side Branch Stent (Tryton Medical, Inc., Newton, MA, USA) is a dedicated stent designed to provide complete carinal coverage of bifurcational lesions. After implantation of a 18 mm cobalt chromium Tryton stent from the left circumflex into the obtuse marginal branch, recrossing with an everolimus eluting Promus stent and final kissing balloon dilatation, optical coherence tomography (OCT) (LightLab Imaging Inc., Westford, MA, USA) was performed with a non-occlusive technique with motorized pullback (3 mm/s) during continuous pump injection of iso-osmolar contrast, in both LCx and OM1. OCT imaging showed good strut apposition at the level of the carina, with full coverage and no stent protrusion at the ostium of the side branch. Few malapposed struts were present in the proximal main vessel in the segment of stent superimposition, with a maximal separation from to the vessel wall of 160 microm. The implantation of the Tryton-Side Branch Stent allowed full coverage of the side branch ostium with uniform apposition of the stent struts at the level of the carina assessed by OCT.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbci
                Revista Brasileira de Cardiologia Invasiva
                Rev. Bras. Cardiol. Invasiva
                Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista - SBHCI (São Paulo )
                2179-8397
                2012
                : 20
                : 3
                : 324-328
                Affiliations
                [1 ] Hospital José Carrasco Arteaga Ecuador
                [2 ] Hospital José Carrasco Arteaga Ecuador
                [3 ] Hospital Santa Inés Ecuador
                [4 ] Hospital Santa Inés Ecuador
                [5 ] Hospital José Carrasco Arteaga Ecuador
                Article
                S2179-83972012000300017
                10.1590/S2179-83972012000300017
                4ffcdea1-5012-4e87-b63f-dc381433ceb6

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=2179-8397&lng=en
                Categories
                CARDIAC & CARDIOVASCULAR SYSTEMS

                Cardiovascular Medicine
                Coronary stenosis,Ultrasonography, interventional,Angioplasty,Stents,Coronary angiography,Estenose coronária,Ultrassonografia de intervenção,Angioplastia,Angiografia coronária

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