{"id":6642,"date":"2026-04-16T13:54:12","date_gmt":"2026-04-16T10:54:12","guid":{"rendered":"https:\/\/wiki.dev.voka.io\/glossary\/herniation-cerebrale\/"},"modified":"2026-05-04T16:13:17","modified_gmt":"2026-05-04T13:13:17","slug":"herniation-cerebrale","status":"publish","type":"glossary_item","link":"https:\/\/wiki.dev.voka.io\/fr\/glossaire\/herniation-cerebrale\/","title":{"rendered":"Herniation c\u00e9r\u00e9brale"},"content":{"rendered":"\n<p>L&rsquo;herniation c\u00e9r\u00e9brale (du latin <em>herniatio<\/em> \u2014 protrusion, hernie) est une complication mortelle de l&rsquo;hypertension intracr\u00e2nienne. Dans cet \u00e9tat, une partie du tissu c\u00e9r\u00e9bral est physiquement d\u00e9plac\u00e9e et comprim\u00e9e \u00e0 travers les \u00e9troites ouvertures naturelles du cr\u00e2ne sous l&rsquo;influence d&rsquo;une pression \u00e9lev\u00e9e.<\/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>\u00c9tiologie et physiopathologie<\/strong><\/h2>\n\n<p>La cavit\u00e9 cr\u00e2nienne est divis\u00e9e en plusieurs compartiments par des cloisons rigides et inextensibles de la dure-m\u00e8re. Lorsqu&rsquo;un h\u00e9matome volumineux se forme ou qu&rsquo;un \u0153d\u00e8me important survient, la pression dans l&rsquo;un de ces compartiments augmente de mani\u00e8re catastrophique. Le tissu c\u00e9r\u00e9bral sain commence \u00e0 chercher une issue et se d\u00e9place vers la zone de moindre r\u00e9sistance.<\/p>\n\n<p>La forme la plus fr\u00e9quente est l&rsquo;herniation temporo-tentorielle. Dans ce cas, l&rsquo;uncus du lobe temporal migre vers la r\u00e9gion de l&rsquo;incisure tentorielle. La deuxi\u00e8me forme critique est l&rsquo;herniation occipitale, o\u00f9 les amygdales c\u00e9r\u00e9belleuses s&rsquo;enfoncent \u00e0 travers le foramen magnum, l\u00e0 o\u00f9 l&rsquo;enc\u00e9phale transitionne vers la moelle \u00e9pini\u00e8re.<\/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>Importance clinique<\/strong><\/h2>\n\n<p>Le tissu c\u00e9r\u00e9bral impliqu\u00e9 dans l&rsquo;herniation agit comme un coin m\u00e9canique. Cela comprime le tronc c\u00e9r\u00e9bral, une structure contenant les centres vitaux pour la respiration, le rythme cardiaque et la r\u00e9gulation du tonus vasculaire.<\/p>\n\n<p>Cliniquement, le processus se manifeste par une d\u00e9pression rapide de la conscience jusqu&rsquo;au coma profond. La dilatation pupillaire unilat\u00e9rale et l&rsquo;extension anormale des membres en r\u00e9ponse \u00e0 la douleur sont caract\u00e9ristiques. Si le d\u00e9placement atteint les sections inf\u00e9rieures du tronc, l&rsquo;arr\u00eat respiratoire et la mort surviennent in\u00e9vitablement. Cet \u00e9tat constitue une indication absolue pour une d\u00e9compression chirurgicale d&rsquo;urgence afin de sauver la vie du patient.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;herniation c\u00e9r\u00e9brale (du latin <em>herniatio<\/em> \u2014 protrusion, hernie) est une complication mortelle de l&rsquo;hypertension intracr\u00e2nienne. Dans cet \u00e9tat, une partie du tissu c\u00e9r\u00e9bral est physiquement d\u00e9plac\u00e9e et comprim\u00e9e \u00e0 travers les \u00e9troites ouvertures naturelles du cr\u00e2ne sous l&rsquo;influence d&rsquo;une pression \u00e9lev\u00e9e.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-6642","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>Herniation c\u00e9r\u00e9brale : d\u00e9finition m\u00e9dicale et description | Voka Wiki<\/title>\n<meta name=\"description\" content=\"L&#039;herniation c\u00e9r\u00e9brale (du latin herniatio \u2014 protrusion, hernie) est une complication mortelle de l&#039;hypertension intracr\u00e2nienne. 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