{"id":6882,"date":"2026-05-04T16:12:14","date_gmt":"2026-05-04T13:12:14","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/hemorragia-subaracnoidea-traumatica\/"},"modified":"2026-06-01T13:05:33","modified_gmt":"2026-06-01T10:05:33","slug":"hemorragia-subaracnoidea-traumatica","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/es\/glosario\/hemorragia-subaracnoidea-traumatica\/","title":{"rendered":"Hemorragia subaracnoidea traum\u00e1tica"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La hemorragia subaracnoidea traum\u00e1tica (del lat\u00edn <em>sub-<\/em> \u2014 bajo y del griego <em>aracne<\/em> \u2014 telara\u00f1a, <em>haima<\/em> \u2014 sangre) es una acumulaci\u00f3n patol\u00f3gica de sangre derramada en el espacio entre las membranas men\u00edngeas suave y aracnoidea. <\/p>\n\n<p class=\"wp-block-paragraph\">Esta condici\u00f3n se desarrolla como resultado de una lesi\u00f3n mec\u00e1nica en la cabeza y es una de las consecuencias m\u00e1s comunes de la contusi\u00f3n cerebral.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x44D;&#x442;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;-&#x438;-&#x43F;&#x430;&#x442;&#x43E;&#x444;&#x438;&#x437;&#x438;&#x43E;&#x43B;&#x43E;&#x433;&#x438;&#x44F;\"><strong>Etiolog\u00eda y fisiopatolog\u00eda<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">En condiciones normales, el espacio subaracnoideo est\u00e1 lleno de l\u00edquido cefalorraqu\u00eddeo transparente, que circula alrededor del cerebro. Bajo un fuerte impacto, fricci\u00f3n del tejido cerebral contra las protuberancias \u00f3seas del cr\u00e1neo o destrucci\u00f3n de la corteza ocurren rupturas de peque\u00f1os vasos sangu\u00edneos piales superficiales.<\/p>\n\n<p class=\"wp-block-paragraph\">La sangre bajo presi\u00f3n ingresa al espacio subaracnoideo, se mezcla con el l\u00edquido cefalorraqu\u00eddeo y se dispersa r\u00e1pidamente por las cisternas basales y surcos del cerebro. A diferencia de las hemorragias espont\u00e1neas (que ocurren debido a la ruptura de un aneurisma), el tipo traum\u00e1tico siempre se acompa\u00f1a de un da\u00f1o mec\u00e1nico primario del propio tejido cerebral. Los productos de degradaci\u00f3n de los eritrocitos tienen una fuerte acci\u00f3n irritante qu\u00edmica en las meninges y causan una inflamaci\u00f3n as\u00e9ptica aguda.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Importancia cl\u00ednica<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">El cuadro cl\u00ednico se caracteriza por un dolor de cabeza insoportable, fotofobia y v\u00f3mitos repetidos. Se desarrolla r\u00e1pidamente el llamado s\u00edndrome men\u00edngeo, cuyo signo principal es la rigidez acentuada (tensi\u00f3n) de los m\u00fasculos occipitales: el paciente f\u00edsicamente no puede acercar el ment\u00f3n al pecho.<\/p>\n\n<p class=\"wp-block-paragraph\">Esta condici\u00f3n no requiere la extracci\u00f3n quir\u00fargica de la sangre en s\u00ed, ya que est\u00e1 extendida en una capa delgada sobre todo el cerebro. Sin embargo, es peligrosa debido a complicaciones severas retardadas. Los co\u00e1gulos de sangre pueden bloquear los caminos de salida del l\u00edquido cefalorraqu\u00eddeo, provocando una hidrocefalia postraum\u00e1tica (edema cerebral). Adem\u00e1s, la acci\u00f3n qu\u00edmica de la sangre sobre las arterias grandes en la base del cerebro a menudo provoca su espasmo persistente (vasoespasmo), lo que lleva a un ictus isqu\u00e9mico secundario varios d\u00edas despu\u00e9s del trauma.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La hemorragia subaracnoidea traum\u00e1tica (del lat\u00edn <em>sub-<\/em> \u2014 bajo y del griego <em>aracne<\/em> \u2014 telara\u00f1a, <em>haima<\/em> \u2014 sangre) es una acumulaci\u00f3n patol\u00f3gica de sangre derramada en el espacio entre las membranas men\u00edngeas suave y aracnoidea. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-6882","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hemorragia subaracnoidea traum\u00e1tica: definici\u00f3n m\u00e9dica y 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