Cor Vasa 2014, 56(6):e478-e485 | DOI: 10.1016/j.crvasa.2014.06.001

Dedicated Tryton Side Branch Stents used in the treatment of coronary bifurcation lesions

Leoš Pleva^a,c,*, Tomáš Jonszta^b, Pavel Kukla^a, Jana Zapletalová^d, Petr Berger^e, Jan Mrózek^a, Martin Porzer^a, Branislav Obžut^a

^a Kardiovaskulární oddělení, Fakultní nemocnice Ostrava, Ostrava, Česká republika

^b Radiodiagnostický ústav, Fakultní nemocnice Ostrava, Ostrava, Česká republika

^c Lékařská fakulta Ostravské univerzity, Ostrava, Česká republika

^d Ústav lékařské biofyziky, Lékařská fakulta Univerzity Palackého, Olomouc, Česká republika

^e Kardiochirurgické centrum, Fakultní nemocnice Ostrava, Ostrava, Česká republika

Introduction: Coronary bifurcation lesions account for 15-20% of all percutaneous coronary interventions. Dedicated bifurcation stents have recently been introduced with the aim to simplify treatment and improve early and late outcomes following stenting of bifurcation lesions. The purpose of our study was to assess the safety and effectiveness of the Tryton dedicated side branch stent at a 6-month clinical and angiography follow-up.

Methods: Forty-two patients with bifurcation lesions were included in our study. The primary endpoint was a 6-month MACE and angiographic stent patency was also evaluated by MS-CT coronarography.

Results: Twenty-two patients (52.38%) were treated for acute coronary syndromes, 39 (92.85%) lesions were "true bifurcations". The 6-month clinical follow-up was performed in all patients. The 6-month MACE rate (cardiac death, myocardial infarction and target lesion revascularization) was 9.52% (95% CI: 2.66-22.62%); of these one patient (2.38%; 95% CI: 0.06-12.57%) died due to cardiogenic shock caused by early stent thrombosis and three patients (7.14%; 95% CI: 1.50-19.48%) required repeated revascularization (TVR) due to in-stent restenosis, all of them in bare metal stents. Tryton stent implantation was successful in 100% lesions. Six-month multi-slice CT coronarography was performed in 39 (92.85%) patients. The implanted bifurcation Tryton stents were satisfactorily visualized in 97.43% of them and a satisfactory 6-month angiographic patency was demonstrated in 37 patients (88.1%).

Conclusion: The usage of a dedicated bifurcation Tryton Side Branch Stent for PCI of the bifurcation lesions is technically feasible with satisfactory long-term results.

Keywords: Bifurcation; Tryton Side Branch Stent; MS-CT coronarography

Received: March 25, 2014; Revised: May 27, 2014; Accepted: June 5, 2014; Published: December 1, 2014  Show citation