RESUMEN
Hepatitis B virus (HBV) infection is estimated to affect 292 million people worldwide, 90% of them are unaware of their HBV status. The Determine HBsAg 2 (Alere Medical Co, Ltd Chiba Japan [Now Abbott]) is a rapid test that meets European Union (EU) regulatory requirements for Hepatitis B surface antigen 2 (HBsAg) analytical sensitivity, detecting the 0.1 IU/mL World Health Organization (WHO) International HBsAg Standard. This prospective, multicentre study was conducted to establish its clinical performance. 351 evaluable subjects were enrolled, 145 HBsAg-positive. The fingerstick whole blood sensitivity and specificity were 97.2% and 98.5% (15' reading, reference assay cut-off 0.05 IU/mL), sensitivity increasing to 97.9% with the prespecified cut-off 0.13 IU/mL (EU regulations). The venous whole blood, serum and plasma sensitivity was 97.2%, 97.9%, and 98.6%, respectively (15' reading); reaching 99%, 99.5% and 100% specificity. A testing algorithm following up an initial positive fingerstick test result with plasma/serum test demonstrates 100% specificity. The Determine HBsAg 2 test gives 15-minute results with high sensitivity and specificity, making it an ideal tool for point-of-care testing, with the potential to enable large-scale population-wide screening to reach the WHO HBV diagnostic targets. The evaluated test improves the existing methods as most of the reviewed rapid tests do not meet the EU regulatory requirements of sensitivity.
RESUMEN
Hasta el momento actual no se ha realizado una evaluación con caracterización de los pacientes con Infarto del Miocardio sin elevación del segmento ST en nuestro hospital, a pesar de ser un diagnóstico frecuente. Métodos: Estudiamos prospectivamente 48 pacientes seleccionados arbitrariamente de manera alterna quienes acudieron a la emergencia del hospital Roosevelt con dolor precordial. Registramos variables clínicas, electrocardiográficas, indicadores de daño miocárdico (Troponina T, CK-Mb, mioglobina). Objetivo: Caracterizar el síndrome coronario agudo en pacientes que acuden con dolor precordial a la emergencia del hospital Roosevelt. Identificando hallazgos en electrocardiograma, características de la población. Resultados: 52% fue de sexo masculino, la edad promedio 63 años (DE:+/-12 años), diabetes mellitus 24%, hipertensión arterial 32%. El promedio de estancia hospitalaria 5.2 días (min:1/max:16), la mortalidad 2,1%, y la tasa de letalidad para inversión de onda T fue 3.3%...