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Vol. 47. Issue S8.
III Foro de Neumólogos en Formación
Pages 32-36 (December 2011)
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Vol. 47. Issue S8.
III Foro de Neumólogos en Formación
Pages 32-36 (December 2011)
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Mediastinitis
Mediastinitis
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Primitivo Martínez Vallinaa,
Corresponding author
p.martinezv@ono.com

Autor para correspondencia.
, Dionisio Espinosa Jiménezb, Lucía Hernández Pérezc, Ana Triviño Ramírezd
a Servicio Cirugía Torácica de Aragón, Hospital Universitario Miguel Servet, Zaragoza, España
b Servicio Cirugía Torácica, Hospital Universitario Reina Sofía, Córdoba, España
c Servicio Cirugía Torácica, Hospital de Cruces, Barakaldo, Bizkaia, España
d Servicio Cirugía Torácica, Hospital Universitario Virgen de la Macarena, Sevilla, España
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Resumen

La mediastinitis se define como la inflamación aguda o crónica de las estructuras mediastínicas. Se presenta con una baja incidencia en general. La causa aguda más frecuente es la postesternotomía derivada de la cirugía cardíaca de revascularización con ambas arterias mamarias internas, con una incidencia del 0,4-5% y una mortalidad del 16,5 al 47%, siendo el vector más frecuente el Staphylococcus aureus. La perforación esofágica normalmente iatrogénica es la segunda causa de mediastinitis aguda, vehiculizada por flora orofaríngea común, con una mortalidad del 20 al 60%, dependiendo del momento del diagnóstico. La mediastinitis necrotizante descendente es la tercera causa, siendo el foco odontógeno en un 60% el origen y el Streptococcus β-hemolítico el microorganismo causante en el 71,5%. La tomografía computarizada es la herramienta diagnóstica de imagen más adecuada. El tratamiento es prácticamente siempre quirúrgico y su precocidad determina la supervivencia de estos pacientes. El choque séptico es el factor de peor pronóstico posquirúrgico.

Palabras clave:
Mediastinitis aguda
Mediastinitis necrotizante descendente
Mediastinitis postesternotomía
Perforación esofágica
Abstract

Mediastinitis is defined as acute or chronic inflammation of the mediastinal structures and generally has a low incidence. The most frequent acute cause is sternotomy following cardiac revascularization surgery with both internal mammary arteries, with an incidence of 0.4% to 5% and a mortality of 16.5% to 47%. The most frequent vector is Staphylococcus aureus. Esophageal perforation, usually iatrogenic, is the second most frequent cause of acute mediastinitis, produced by common oropharyngeal flora, with a mortality rate of 20% to 60%, depending on the time of diagnosis. The third most frequent cause is descending necrotizing mediastinitis, the origin being an odontogenous focus in 60% and beta-hemolytic streptococcus the causative agent in 71.5% of cases. The most accurate diagnostic imaging technique is computed tomography. Treatment is almost always surgical and survival depends on its early performance. The worst postsurgical prognostic factor is septic shock.

Keywords:
Acute mediastinitis
Mediastinitis following cervical suppuration
Oesophageal perforation
Post-sternotomy mediastinitis
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Copyright © 2011. Sociedad Española de Neumología y Cirugía Torácica
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