RESUMO
INTRODUCTION: Clinical guidelines recommend measurement of arterial (carotid and femoral) plaque burden by vascular ultrasound (VUS) as a risk modifier in individuals at low or moderate risk without known atherosclerotic cardiovascular disease (ASCVD). AIM: To evaluate the prevalence of carotid and femoral plaques by age and sex, the burden of subclinical atherosclerosis (SA), and its association with classic CVRF in subjects over 30 years of age without ASCVD. METHODS: We prospectively enrolled 5775 consecutive subjects referred for cardiovascular evaluation and determined the prevalence and burden of SA using 2D-VUS in carotid and femoral arteries. RESULTS: Sixty-one percent were men with a mean age of 51.3 (SD 10.6) years. Overall, plaque prevalence was 51% in carotid arteries, 39.3% in femoral arteries, 62.4% in carotid or femoral arteries, and 37.6% in neither. The prevalence of plaques and SA burden showed an increasing trend with age, being higher in men than in women and starting before the age of 40, both in the carotid and femoral sites. There was also an increasing prevalence of plaques according to the number of CVRF, and interestingly we found a high prevalence of plaques in subjects with 0 or 1 classic CVRF. CONCLUSIONS: We observed an increased prevalence and burden of carotid or femoral SA, higher in men, beginning before the fourth decade of life and increasing with age. Despite a significant association with classic CVRF, a significant number of subjects with low CVRF were diagnosed with SA.
Assuntos
Doenças das Artérias Carótidas , Artéria Femoral , Hospitais Comunitários , Doença Arterial Periférica , Placa Aterosclerótica , Humanos , Masculino , Feminino , Artéria Femoral/diagnóstico por imagem , Prevalência , Pessoa de Meia-Idade , Doenças das Artérias Carótidas/epidemiologia , Doenças das Artérias Carótidas/diagnóstico por imagem , Estudos Prospectivos , Adulto , Placa Aterosclerótica/epidemiologia , Doença Arterial Periférica/epidemiologia , Doença Arterial Periférica/diagnóstico por imagem , Doença Arterial Periférica/diagnóstico , Medição de Risco , Valor Preditivo dos Testes , Idoso , Doenças Assintomáticas , Fatores Sexuais , Fatores Etários , Fatores de Risco , Ultrassonografia , Distribuição por Idade , Estudos TransversaisRESUMO
Transparent a-IGZO (In-Ga-Zn-O) films have been actively studied for use in the fabrication of high-quality TFTs. In this study, a-IGZO films and a-IGZO/ITO double layers were deposited by DC magnetron sputtering under various oxygen flow rates. The a-IGZO films showed an amorphous structure up to 500 degrees C. The deposition rate of these films decreased with an increase in the amount of oxygen gas. The amount of indium atoms in the film was confirmed to be 11.4% higher than the target. The resistivity of double layer follows the rules for parallel DC circuits The maximum Hall mobility of the a-IGZO/ITO double layers was found to be 37.42 cm2/V x N s. The electrical properties of the double layers were strongly dependent on their thickness ratio. The IGZO/ITO double layer was subjected to compressive stress, while the ITO/IGZO double layer was subjected to tensile stress. The bending tolerance was found to depend on the a-IGZO thickness.
RESUMO
La angioplastia transluminal coronaria se ha constituído en una técnica de revascularización segura en el tratamiento de pacientes con cardiopatía isquémica. En la República Argentina aún no disponemos de datos precisos que permitan conocer la evolución clínica alejada de los pacientes sometidos a angioplastia. Con la intención de determinar el éxito clínico y conocer los resultados en el seguimiento alejado de la angioplastia coronaria en nuestro país, se llevó adelante la experiencia del Registro CONAREC V. De esta manera, se incluyeron en forma prospectiva y consecutiva 1295 pacientes, provenientes de 41 centros con residencia en cardiología. Se efectuó el análisis en el seguimiento alejado en el 91,7 por ciento de los pacientes con éxito clínico. La angioplastia logró resultados intrahospitalarios y una tasa de eventos durante el seguimiento similares a los descriptos en la literatura
Assuntos
Humanos , Masculino , Adulto , Feminino , Pessoa de Meia-Idade , Angina Instável , Angioplastia Coronária com Balão , Isquemia Miocárdica/terapia , Infarto do Miocárdio , Argentina , Protocolos Clínicos , Coleta de Dados , Revascularização Miocárdica , Seleção de PacientesRESUMO
El dolor precordial es motivo de una de las consultas cardiológicas más frecuentes y que plantea mayores problemas. dado que en Argentina no se conocen datos acerca de la evolución de estos pacientes, se realizó un registro prospectivo multicéntrico. Completaron el seguimiento a 30 días 1255 pacientes, en los que se analizó el diagnóstico de guardia y el criterio de internación en términos de sensibilidad, especificidad, valor predictivo positivo y error predictivo. Se analizaron los recursos empleados en el diagnóstico y tratamiento según se realizara o no el diagnóstico en guardia, según diagnóstico final y de acuerdo con el tipo de centro
