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Optical coherence tomography assessment of a new dedicated bifurcation stent

2009; European Association of Percutaneous Cardiovascular Interventions; Volume: 5; Issue: 5 Linguagem: Inglês

10.4244/eijv5i5a89

1969-6213

Paweł Tyczyński, Giuseppe Ferrante, Neville Kukreja, Cristina Moreno-Ambroj, Peter Barlis, Nandakumar Ramasami, Ranil de Silva, Kevin J. Beatt, Carlo Di Mario,

Optical Coherence Tomography Applications

Dedicated bifurcation stents should facilitate deployment and improve coverage of bifurcational lesions. We used optical coherence tomography (OCT) to assess bifurcation lesions treated with a dedicated stent implanted in the side branch (SB) in conjunction with drug eluting stents in the main vessel (MV) in a culotte-like fashion.Nine patients treated with the Tryton stent underwent postprocedural OCT examination. Total percent of malapposed struts per patient was 18.1+/-8.7%. The longitudinal distribution of the percent of malapposed struts per patient showed that the prevalence of malapposed struts was significantly higher at the level of the bifurcation (33.3%), than in both the proximal segment and the distal segment (18.5% and 9.8%, respectively, p=0.011). When the bifurcation was divided into two halves (opposite SB and toward SB), the highest percent of malapposed struts was toward the SB (47.6%). Also the wall-strut distance for malapposed struts was significantly higher in the bifurcation half toward the SB than in the proximal and the distal segment.Malapposed struts are frequent in bifurcations despite the use of a dedicated stent. The highest frequency and largest vessel wall-stent strut distance are observed in the bifurcation half toward the SB.