2019, Número 2
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Acta Med 2019; 17 (2)
Síndrome eutiroideo enfermo
Ortega CMJ, Seniscal ADA, Díaz GE, Rodríguez WFL
Idioma: Español
Referencias bibliográficas: 39
Paginas: 131-136
Archivo PDF: 185.56 Kb.
RESUMEN
El síndrome eutiroideo enfermo es una entidad de presentación frecuente en pacientes hospitalizados, sobre todo en los críticamente enfermos. Desde su descripción en la década de los setenta, ha sido motivo de estudio, ya que su mecanismo fisiopatológico es complejo. Los cambios en el perfil tiroideo parecen ser secundarios al estado agudo de la enfermedad. En todos los casos, existen alteraciones en la actividad de la desionidasa tiroidea, la unión de hormonas tiroideas a proteínas plasmáticas, la transformación de hormonas tiroideas en tejidos periféricos, la actividad del receptor nuclear de hormonas tiroideas y la secreción de la hormona estimuladora de la tiroides (TSH) y de la hormona liberadora de tirotropina (TRH). Se sabe que su presentación y la disminución de T4 a cifras por debajo de 2 µg/dL aumenta hasta en 80% el riesgo de mortalidad en los pacientes en unidades de terapia intensiva. El tratamiento hormonal de sustitución tiroidea con T3 y/o T4 no ha demostrado un beneficio concreto, y su indicación es motivo de polémica. Se realiza la revisión del tema, comprendida por las características del síndrome, su fisiopatología, cuadro clínico, terapéutica y diagnósticos diferenciales.
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