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Abstract Background Thrombolysis is still used when primary angioplasty is delayed for a long time, but 25%–30% of patients require rescue angioplasty (RA). There are no established recommendations for antithrombotic management in RA. This registry analyzes regimens for antithrombotic management. Methods A retrospective, multicenter, observational registry of consecutive patients treated with RA at 8 hospitals. All variables were collected and follow-up took place at 6 months. Results The study included 417 patients. Antithrombotic therapy in RA was: no additional drugs 22.3%, unfractionated heparin (UFH) 36.6%, abciximab 15.5%, abciximab plus UFH 10.5%, bivalirudin 5.7%, enoxaparin 4.3%, and others 4.7%. Outcomes at 6 months were: mortality 9.1%, infarction 3.3%, definite or probable stent thrombosis 4.3%, revascularization 1.9%, and stroke 0.5%. Mortality was related to cardiogenic shock, age > 75 years, and anterior location. The stent thrombosis rate was highest with bivalirudin (12.5% at 6 months). The incidence of bleeding at admission was high (14.8%), but most cases were not severe (82% BARC ≤2). Variables independently associated with bleeding were: femoral access (OR 3.30; 95% CI 1.3–8.3: p = 0.004) and post-RA abciximab infusion (OR 2.26; 95% CI 1.02–5: p = 0.04). Conclusions Antithrombotic treatment regimens in RA vary greatly, predominant strategies consisting of no additional drugs or UFH 70 U/kg. No regimen proved predictive of mortality, but bivalirudin was related to more stent thrombosis. There was a high incidence of bleeding, associated with post-RA abciximab infusion and femoral access.

RESUMEN Introducción y objetivos: El estudio EPIC03-BIOSS se llevó a cabo para describir la eficacia del stent farmacoactivo dedicado BIOSS LIM C en el tratamiento de las lesiones en bifurcación, así como la modificación inducida sobre la lesión en bifurcación por angiografía cuantitativa automatizada. Métodos: Estudio observacional prospectivo en el que se incluyeron 124 pacientes con lesión en bifurcación tratados con stent farmacoactivo BIOSS LIM C, excluidas las lesiones por reestenosis y aquellas en las que no había afección del vaso principal. Resultados: El stent se implantó con éxito en 121 pacientes (97,6%); en 18 (14,5%) se utilizó una técnica de 2 stents. El análisis por angiografía cuantitativa automatizada mostró una estenosis residual media del 18% en el segmento proximal, de prácticamente el 0% en el segmento distal y del 21% en la rama lateral. Los resultados angiográficos para la técnica de doble stent muestran unos diámetros (2,12 ± 0,30 frente a 1,60 ± 0,42 mm; p < 0,001) y estenosis residuales (18,36 ± 9,94 frente a 28,49 ± 14,19%; p < 0,01) significativamente mejores. La distorsión sobre la angulación nativa del vaso resultó mínima, con una reducción absoluta de unos 5° (52,8 ± 18,4 frente a 47,5 ± 17,2°; p = 0,001). Conclusiones: El stent BIOSS LIM C consigue una elevada tasa de éxito para el tratamiento de las lesiones en bifurcación. Los resultados angiográficos son buenos, destacando la escasa distorsión sobre la angulación nativa del vaso y los excelentes resultados angiográficos de la técnica de doble stent. Consideramos que puede ser un buen dispositivo para el tratamiento de las bifurcaciones, con la ventaja de poder facilitar la implantación no prevista de un segundo stent.

Abstract Introduction and objectives: To describe the efficacy of the BIOSS LIM C dedicated sirolimus-eluting stent to treat coronary bifurcation lesions, and impact on the bifurcation angle and carina through quantitative coronary angiography. Methods: Observational prospective study including 124 patients with bifurcation lesions treated with a BIOSS LIM C dedicated sirolimus-eluting stent excluding restenotic lesions and those without main vessel involvement. Results: The stent was successfully deployed in 121 patients (97.6%) while in 18 (14.5%) double stenting was used. The quantitative coronary analysis has shown proper stent expansion with a mean residual stenosis of 18% in the proximal segment, nearly 0% in the distal segment, and 21% in the side branch. The angiographic results of double stenting showed higher mean diameters (2.12 ± 0.30 vs 1.60 ± 0.42; P < .001), and lower residual stenosis (18.36 ± 9.94 vs 28.49 ± 14.19%, P < .01). Distortion imposed on the bifurcation angulation was minimal with an absolute reduction of 5 degrees (52.8 ± 18.4 vs 47.5 ± 17.2; P = .001). Conclusions: The dedicated BIOSS LIM C stent has had a very high success rate to treat coronary bifurcation lesions. Angiographic results are good with a remarkably low impact on the native bifurcation angulation, and excellent results from double stenting. We think this can be a very useful device to treat coronary bifurcation lesions with the advantage of easing out the bailout deployment of a second stent into the side branch.