{"id":4889,"date":"2026-03-16T13:02:10","date_gmt":"2026-03-16T10:02:10","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/choque-espinhal\/"},"modified":"2026-04-01T18:36:55","modified_gmt":"2026-04-01T15:36:55","slug":"choque-espinhal","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossary\/choque-espinhal\/","title":{"rendered":"Choque espinhal"},"content":{"rendered":"\n<p>Choque espinhal (do latim <em>spinalis<\/em> \u2014 espinhal e do fr. <em>choc<\/em> \u2014 choque) \u00e9 um estado transit\u00f3rio de depress\u00e3o total de todas as fun\u00e7\u00f5es reflexas e condutivas da medula espinhal abaixo do n\u00edvel da les\u00e3o, que se desenvolve em resposta a uma les\u00e3o mec\u00e2nica aguda da coluna vertebral.<\/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>Etiologia e fisiopatologia<\/strong><\/h2>\n\n<p>O fen\u00f4meno baseia-se na cessa\u00e7\u00e3o s\u00fabita, estrutural ou funcional, da influ\u00eancia t\u00f4nica (excita\u00e7\u00e3o constante) dos centros superiores do c\u00e9rebro sobre os motoneur\u00f4nios da medulla espinhal. Como resultado, ocorre uma hiperpolariza\u00e7\u00e3o aguda das membranas celulares dos neur\u00f4nios abaixo do local da les\u00e3o, tornando-os insens\u00edveis a quaisquer sinais.<\/p>\n\n<p>A condi\u00e7\u00e3o \u00e9 clinicamente caracterizada por paralisia fl\u00e1cida da musculatura esquel\u00e9tica, perda total de todos os tipos de sensibilidade (anestesia), arreflexia total e atonia da musculatura lisa dos \u00f3rg\u00e3os p\u00e9lvicos (reten\u00e7\u00e3o urin\u00e1ria aguda e paresia paralisante do intestino).<\/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>Import\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>O choque espinhal mascara o verdadeiro grau de destrui\u00e7\u00e3o anat\u00f4mica do tecido nervoso. No per\u00edodo agudo (nos primeiros dias ap\u00f3s a les\u00e3o), neurologicamente \u00e9 imposs\u00edvel distinguir uma ruptura anat\u00f4mica completa da medula espinhal de uma contus\u00e3o grave, pois o quadro cl\u00ednico parece igualmente desanimador.<\/p>\n\n<p>A dura\u00e7\u00e3o da fase de choque nos seres humanos varia de alguns dias a v\u00e1rias semanas. O retorno do reflexo bulbocavernoso \u00e9 considerado um crit\u00e9rio objetivo para a sa\u00edda do estado de choque espinhal. Somente ap\u00f3s o seu aparecimento, o sistema nervoso entra na fase de espasticidade, e o m\u00e9dico pode avaliar com precis\u00e3o o progn\u00f3stico de reabilita\u00e7\u00e3o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Choque espinhal (do latim <em>spinalis<\/em> \u2014 espinhal e do fr. <em>choc<\/em> \u2014 choque) \u00e9 um estado transit\u00f3rio de depress\u00e3o total de todas as fun\u00e7\u00f5es reflexas e condutivas da medula espinhal abaixo do n\u00edvel da les\u00e3o, que se desenvolve em resposta a uma les\u00e3o mec\u00e2nica aguda da coluna vertebral.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-4889","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>Choque espinhal: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka 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