anos (média 2,2 ± 1,5 anos) foi completado em 98,3%. Resultados: Entre os pacientes avaliados, 29% tinham diabetes, 60% eram portadores de doença multiarterial e 40% apresentavam síndrome coronária aguda (15%, infarto agudo do miocárdio [IAM]). A artéria descendente anterior foi o vaso-alvo mais freqüentemente tratado (35,8%), e 67% das lesões eram de alta complexidade (tipo B2/C). No total, 3.634 SF foram implantados e 40% dos pacientes receberam múltiplos stents. A trombose de stent (classificação Academic Research Consortium) incidiu em 1,6% (n = 38), 60,5% com confirmação angiográfica, 42% ocorreram entre 1 e 12 meses e 47% dos eventos tiveram desfecho fatal. Os preditores independentes de trombose de stent foram: tabagismo atual (razão de risco [RR] 2,59; intervalo de confiança [IC] 95% 1,18-5,67; p = 0,018), intervenção coronária percutânea (ICP) no IAM (RR 3,50; IC 95% 1,31-9,40; p = 0,013), calcificação moderada/grave (RR 2,38; IC 95% 1,34-4,23; p = 0,003), lesão excêntrica (RR 1,86; IC 95% 1,03-3,34; p = 0,039), > 1 SF implantado por território miocárdico (RR 1,81; IC 95% 1,09-3,02; p = 0,023), pósdilatação (RR 0,50; IC 95% 0,29-0,90; p = 0,020) e estenose residual intra-stent (RR 1,04 [por aumento de unidade %]; IC 95% 1,01-1,06; p = 0,003). Conclusões: Nesse registro prospectivo do "mundo-real", a incidência cumulativa de trombose de stent até cinco anos de seguimento foi rara (1,6%), e foi associada a tabagismo, ICP no IAM, morfologia SUMMARY Stent Thrombosis After Drug-Eluting Stenting in the "Real-World": A Critical Analysis of the DESIRE (Drug-Eluting Stent in the Real World) Registry Background: We report the incidence of stent thrombosis (ST) predictors in a large cohort of complex patients treated with drug eluting stents (DES) in the real world. Methods: From May 2002 until January 2008, 2,365 non-selected patients with ≥ 1 coronary lesion with stenosis of ≥ 50% were treated with DES. The clinical follow-up up to five years (mean time 2.2 ± 1.5 years) was completed in 98.3%. Results: Twenty nine percent of patients had diabetes and 60% multi-vessel disease, 40% presented acute coronary syndrome (15%, acute myocardial infarction [AMI]).The anterior descending artery was the target vessel most frequently treated (35.8%), and 67% were complex lesions (Type B2/C). In all, 3,634 DES were implanted and 40% received multiple stents. Stent thrombosis (classification of the Academic Research Consortium) occurred in 1.6% (n = 38), 60.5% with angiographic confirmation, 42% occurred between 1 and 12 months and 47% of the events had a fatal outcome. The independent predictors of ST were: current smoking [relative risk (RR) 2.59; 95% confidence interval (CI) 1.18-5.67; p = 0.018], AMI intervention (RR 3.50; 95% CI 1.31-9.40; p = 0.013), moderate to severe calcification (RR 2.38; 95% CI 1.34-4.23; p = 0.003), excentric lesion (RR 1.86; 95% CI 1.03-3.34; p = 0.039), > 1 DES implanted per myocardial territory (RR 1.81; 95% CI 1.09-3.02; p = 0.023), post-dilatation (RR 0.50; 95% CI 0.29-0.90; p = 0.020) and intr...
Background: Percutaneous interventions in saphenous vein grafts (SVG) result in lower rates of angiographic success and higher risk of complications, due to the increased risk of embolization of debris from the friable atherosclerotic plaque. With the advent of distal protection devices, improvements in efficacy and safety were achieved in the procedure. Our objective was to compare the MGuard TM and SESAME TM stents, dedicated for SVG treatment, during the first 30 days of follow up. Methods: This is a retrospective study comparing angiographic and ultra-sonographic variables and clinical events within 30 days in patients with SVG lesions treated with MGuard TM balloon-expandable stents (n = 11) vs. SESAME TM self-expandable stents (n = 14). Results: Patients treated with MGuard TM and SESAME TM stents had similar clinical profiles (mean age 69 years; male gender, 72%; diabetic, 28%; treated for acute coronary syndrome, 44%), equivalent age of aortocoronary venous grafts (9.7 ± 6.2 years vs. 10.1 ± 3.2 years; p = 0.80) and SGV with the same degree of atherosclerotic impairment. Post-procedure angiographic success was reached in all cases, however with a tendency towards better stent expansion in the MGuard TM group (87% vs. 68%; p = 0.08). Over the 30-day clinical follow-up, patients treated with the SESAME TM stent had higher frequency of major cardiac events (two cases of non-Q myocardial infarction RESUMO Fundamento: As intervenções percutâneas em pontes de safena (PS) apresentam menores taxas de sucesso angiográfico e maior risco de complicações, pelo risco aumentado de embolização dos fragmentos da placa aterosclerótica friável. Com o advento dos dispositivos de proteção distal, observou-se maior eficácia e segurança do procedimento. Nosso objetivo foi comparar os stents MGuard ® e SESAME ® , dedicados ao tratamento de PS, nos primeiros 30 dias de evolução. Método: Estudo retrospectivo, comparando as variáveis angiográficas e ultra-sonográficas e a evolução clínica aos 30 dias de pacientes portadores de lesões em PS tratados com stent balão-expansível MGuard ® (n = 11) vs. stent auto-expansível SESAME ® (n = 14). Resultados: Os pacientes tratados com stents MGuard ® e SESAME ® demonstraram perfis clínicos superponíveis (média de idade, 69 anos; sexo masculino, 72%; diabéticos, 28%; tratados na vigência de síndrome coronária aguda, 44%), idade dos enxertos venosos aortocoronários equivalentes (9,7 ± 6,2 anos vs. 10,1 ± 3,2 anos; p = 0,80) e PS com o mesmo grau de acometimento aterosclerótico. O sucesso angiográfico pós-procedimento foi alcançado em todos os casos, porém com tendência a melhor expansão do stent no grupo MGuard ® (87% vs. 68%; p = 0,08). No seguimento clínico de 30 dias, os pacientes tratados com stent SESAME ® apresentaram maior freqüência de eventos cardíacos maiores (dois casos de infarto do miocárdio não-Q e um caso de revascularização do vaso-alvo), comparativamente a nenhum evento no grupo MGuard ® . Conclusões: Nessa análise retrospectiva de pequena série de pacientes pré-selecionados d...
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