OBJECTIVES Elderly patients show a higher incidence of ischemic and bleeding events after percutaneous transluminal coron-ary intervention(PCI).We sought to investigate outcomes in elderly patients treated with antith...
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OBJECTIVES Elderly patients show a higher incidence of ischemic and bleeding events after percutaneous transluminal coron-ary intervention(PCI).We sought to investigate outcomes in elderly patients treated with antithrombotic strategy guided by bleeding and ischemic risks after revascularization with last generation everolimus-eluting stent(EES).METHODS Prospective multicenter registry including patients over 75 years revascularized with EES and antithrombotic ther-apy guided by clinical presentation,PCI complexity and PRECISE DAPT ***-primary safety endpoints were:(1)composite of cardiac death,myocardial infarction and stent thrombosis and;(2)bleeding(BARC 2-5).Primary efficacy endpoint was target lesion revascularization.A matched group of patients revascularized with current drug-eluting stents and no such tailored antith-rombotic therapy was used as *** finally,1064 patients were included in SIERRA-75 cohort,80.8±4.2 years,36.6%women,71%acute coronary syn-dromes(ACS)and 53.6%complex ***-primary safety endpoint of major adverse cardiovascular events was met in 6.2%,co-primary safety endpoint of bleeding in 7.8%and primary efficacy endpoint of TKLR in 1.5%.The multivariable adjusted model showed no significant association of the prescribed short/long dual antiplatelet therapy(DAPT)durations with any endpoint suggesting a well tailored *** stent thrombosis reported in the subgroup with 1-3 months DAPT *** compared to control group,bleeding BARC 2-5 was significantly lower in SIERRA-75 group(7.4%vs.10.2%,P=0.04)as well as the net safety-efficacy endpoint(14.3%vs.18.5%,P=0.02).CONCLUSIONS In elderly population,the application of this risks-adjusted antithrombotic protocol after revascularization with last generation EES seems to be associated with an improved prognosis in terms of ischemic and bleeding outcomes.
In this work, it is presented the synthesis and characterization of transparent and colorless organic-inorganic hybrid anti-graffiti protective materials obtained by sol-gel method. This type of materials is based on ...
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In this work, it is presented the synthesis and characterization of transparent and colorless organic-inorganic hybrid anti-graffiti protective materials obtained by sol-gel method. This type of materials is based on MTES (methyltriethoxysilane), TPOZ (tetrapropoxide of zirconium) and PDMS (polydimethylsiloxane). The synthesis has been carried out at 25, 35 and 45 oC in order to evaluate the role of temperature in the structure, microstructure and anti-graffiti behavior as well. The incorporation of zirconium within the organic modified silica network, of sols after being gelled and dried, is evident by a shoulder which increased with temperature situated at 950 cm-1 (Si-O-Zr bonds), and it is homogenously dispersed inside the matrix avoiding the formation of large ZrO2 precipitates. As the temperature increases, the hydrolysis and condensation reactions occur in more extension and thus, the obtained sols are more cross-linked and present more Si-O-Zr linkages. The promising anti-graffiti behavior of the protective hybrids was qualitatively determined being the spot removal higher than 90%.
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