La insuficiencia renal crónica se asocia a un peor pronóstico tras implante de stent liberador de sirolimus / Chronic renal failure is associated with worse outcome after implantation of sirolimus eluting stent

Fundamento y objetivos: La insuficiencia renal crónica (IRC) es una patología emergente en los países desarrollados, asociándose esta además con una elevada prevalencia de enfermedad coronaria. Nuestro objetivo es determinar la influencia de la IRC en la aparición de eventos cardiovasculares adversos tras implante de un stent liberador de sirolimus (SLS) en una población no seleccionada.Pacientes y método: Estudio retrospectivo de una cohorte de 461 pacientes a los que se les implantó, de forma consecutiva, uno o más stents liberadores de sirolimus entre septiembre de 2002 y diciembre de 2005 en nuestro centro. Evaluamos la incidencia de eventos adversos durante el seguimiento y su relación con la IRC. Utilizamos la ecuación de MDRD para el cálculo del filtrado glomerular.Resultados: El tiempo medio de seguimiento fue de 42 (DS±13) meses. La edad media fue 61,3 (DS±11,8) años, y el 85,5% eran varones. En total presentaban IRC 50 (11%) pacientes. En un modelo multivariado ajustado por edad, sexo, fracción de eyección, clase killip y la presencia de hipertensión, DM, anemia o trombosis del stent, la IRC se comportó como un potente predictor de mortalidad tanto al año como al final del seguimiento (RR=3,82; intervalo de confianza del 95%, 1,41–10,33, p=0,008) y como un factor independiente de riesgo aumentado de restenosis (RR=3,47; IC del 95%, 1,01–11,97; p=0,045) comparado con los pacientes sin IRC. Aunque con una mayor tendencia hacia el grupo de pacientes con IRC, no se observaron diferencias significativas en la incidencia de trombosis del stent (8% frente a 3,4% respectivamente, p=0,109) ni en la necesidad de nueva revascularización sobre el vaso diana (18,8% frente a 10,8% respectivamente, p=0,094).Conclusiones: La presencia de IRC en pacientes con enfermedad coronaria se asocia con un aumento en la incidencia de restenosis y es un potente predictor de mortalidad tras el implante de un stent liberador de sirolimus (AU)

Background and objectives: Chronic renal failure (CRF) is an emergent pathology in industrialized countries and is associated with high prevalence of coronary artery disease. Our aim is to determine the influence of CRF in the appearance of adverse cardiovascular events after sirolimus-eluting stent implantation in a non selected cohort.Patients and methods: Observational retrospective study with a cohort of 461 patients who received one or more sirolimus-eluting stent between September 2002 and December 2005 at our institution. We evaluated the incidence of adverse cardiovascular events during the follow-up period and their relation with chronic kidney disease. We used the abbreviated Modification of Diet in Renal Disease (MDRD) equation to calculate the GFR.Results: The mean follow-up was 42 months (SD±13) and the mean age was 61±11 years and 85 percent of the group were men. Chronic renal failure was present in 50 patients, 11 percent of the cohort. In a multivariate model, after adjustment for age, sex, left ventricle election fraction, anemia, diabetes, hypertension, Killip class and stent thrombosis, chronic renal failure was an independent predictive factor of death from any cause (hazard ratio, 3.82; 95 percent confidence interval, 1.41–10.33, p=0.008), and an significant risk factor for restenosis (hazard ratio 3.47; 95 percent confidence interval, 1.01–11.97, p=0.045). Significant differences were not found in thrombosis between patients with or without CRF (8% vs 3.4%, p=0,109), although a trend was observed in the CRF group. There no were statistical association with need for a new target vessel revascularization (TVR) after coronary intervention either (18.8% versus 10.5%, p=0.094). Conclusions: The presence of chronic renal failure in patients with coronary disease is associated with higher risk of restenosis and is a potent predictor of mortality after sirolimus-eluting stent implantation

[Chronic renal failure is associated with worse outcome after implantation of sirolimus eluting stent]. / La insuficiencia renal crónica se asocia a un peor pronóstico tras implante de stent liberador de sirolimus.

BACKGROUND AND OBJECTIVES: Chronic renal failure (CRF) is an emergent pathology in industrialized countries and is associated with high prevalence of coronary artery disease. Our aim is to determine the influence of CRF in the appearance of adverse cardiovascular events after sirolimus-eluting stent implantation in a non selected cohort. PATIENTS AND METHODS: Observational retrospective study with a cohort of 461 patients who received one or more sirolimus-eluting stent between September 2002 and December 2005 at our institution. We evaluated the incidence of adverse cardiovascular events during the follow-up period and their relation with chronic kidney disease. We used the abbreviated Modification of Diet in Renal Disease (MDRD) equation to calculate the GFR. RESULTS: The mean follow-up was 42 months (SD ± 13) and the mean age was 61 ± 11 years and 85 percent of the group were men. Chronic renal failure was present in 50 patients, 11 percent of the cohort. In a multivariate model, after adjustment for age, sex, left ventricle election fraction, anemia, diabetes, hypertension, Killip class and stent thrombosis, chronic renal failure was an independent predictive factor of death from any cause (hazard ratio, 3.82; 95 percent confidence interval, 1.41-10.33, p = 0.008), and an significant risk factor for restenosis (hazard ratio 3.47; 95 percent confidence interval, 1.01-11.97, p = 0.045). Significant differences were not found in thrombosis between patients with or without CRF (8% vs 3.4%, p = 0,109), although a trend was observed in the CRF group. There no were statistical association with need for a new target vessel revascularization (TVR) after coronary intervention either (18.8% versus 10.5%, p = 0.094). CONCLUSIONS: The presence of chronic renal failure in patients with coronary disease is associated with higher risk of restenosis and is a potent predictor of mortality after sirolimus-eluting stent implantation.