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The International Journal of Cardiovascular Imaging

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01.12.2014 | Original Paper

Side branch healing patterns of the Tryton dedicated bifurcation stent: a 1-year optical coherence tomography follow-up study

verfasst von: Maik J. Grundeken, Hector M. Garcia-Garcia, Robin P. Kraak, P. Woudstra, Daniel M. de Bruin, Ton G. van Leeuwen, Karel T. Koch, Jan G. Tijssen, Robbert J. de Winter, Joanna J. Wykrzykowska

Erschienen in: The International Journal of Cardiovascular Imaging | Ausgabe 8/2014

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Abstract

The bare-metal Tryton Side Branch (SB) Stent™ (Tryton Medical, Durham, NC, USA) is used with a drug-eluting stent (DES) in the main branch (MB) to treat bifurcation lesions. It is argued that a drug-eluting Tryton-version is needed to improve clinical outcomes, although previous registries have shown good clinical results. More insights in neo-intimal hyperplasia (NIH) growth patterns of the Tryton treatment strategy are needed to decide if and where to drug-coat the stent. Ten patients returned for follow-up angiography (mean follow-up time 393 ± 103 days) and optical coherence tomography (OCT) pullbacks from the MB were obtained in all patients and from the SB in six patients. A per-strut analysis showed an uncovered strut rate of 0.7 % and an incompletely-apposed strut rate of 0.8 %. Most incompletely-apposed struts were found at the bifurcation region, in the luminal half facing towards the SB. Mean NIH thickness in the proximal MB, distal MB and SB were 0.14 ± 0.11, 0.19 ± 0.11, and 0.34 ± 0.19 mm, respectively, with a variety of growth patterns observed in the SB. We found good vascular healing of the DES in the MB, while healing was less favourably in the SB part. Furthermore, we observed a variety of NIH growth patterns in this SB part and more studies are needed to investigate the relation between growth patterns and clinical outcomes.

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Titel: Side branch healing patterns of the Tryton dedicated bifurcation stent: a 1-year optical coherence tomography follow-up study
verfasst von: Maik J. Grundeken
Hector M. Garcia-Garcia
Robin P. Kraak
P. Woudstra
Daniel M. de Bruin
Ton G. van Leeuwen
Karel T. Koch
Jan G. Tijssen
Robbert J. de Winter
Joanna J. Wykrzykowska
Publikationsdatum: 01.12.2014
Verlag: Springer Netherlands
Erschienen in: The International Journal of Cardiovascular Imaging / Ausgabe 8/2014
Print ISSN: 1569-5794
Elektronische ISSN: 1875-8312
DOI: https://doi.org/10.1007/s10554-014-0504-y

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