{"id":4903,"date":"2026-03-16T13:02:09","date_gmt":"2026-03-16T10:02:09","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/tetraplegia\/"},"modified":"2026-04-01T18:37:00","modified_gmt":"2026-04-01T15:37:00","slug":"tetraplegia","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossary\/tetraplegia\/","title":{"rendered":"Tetraplegia"},"content":{"rendered":"\n<p>Tetraplegia (do grego <em>tetra<\/em> \u2014 quatro e <em>plegia<\/em> \u2014 paralisia, golpe) \u2014 \u00e9 uma condi\u00e7\u00e3o neurol\u00f3gica grave, caracterizada pela perda completa dos movimentos volunt\u00e1rios e de todos os tipos de sensibilidade em ambos os bra\u00e7os, ambas as pernas e no tronco. <\/p>\n\n<p>Essa patologia \u00e9 uma consequ\u00eancia direta de uma les\u00e3o catastr\u00f3fica da medula espinhal no n\u00edvel da regi\u00e3o cervical.<\/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 substrato cr\u00edtico de les\u00e3o \u00e9 a destrui\u00e7\u00e3o transversal ou isquemia profunda da medula espinhal do n\u00edvel do primeiro segmento cervical (C1) at\u00e9 o primeiro tor\u00e1cico (T1). Comumente, essa les\u00e3o ocorre em fraturas complicadas das v\u00e9rtebras cervicais devido a acidentes de tr\u00e2nsito, quedas de altura ou mergulhos imprudentes em \u00e1guas rasas.<\/p>\n\n<p>O mecanismo de desenvolvimento da paralisia total est\u00e1 relacionado \u00e0 interrup\u00e7\u00e3o anat\u00f4mica completa das vias motoras descendentes (trato c\u00f3rtico-espinhal), atrav\u00e9s das quais os comandos do c\u00f3rtex cerebral s\u00e3o transmitidos aos m\u00fasculos esquel\u00e9ticos. Simultaneamente, todas as vias sensoriais ascendentes, que transmitem sinais do corpo ao c\u00e9rebro, s\u00e3o interrompidas.<\/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>A tetraplegia representa uma das les\u00f5es mais incapacitantes na medicina. A gravidade cl\u00ednica do estado do paciente depende do n\u00edvel exato da les\u00e3o da medula espinhal. Uma les\u00e3o acima do n\u00edvel da quarta v\u00e9rtebra cervical (C4) leva \u00e0 paralisia do nervo fr\u00eanico, tornando a respira\u00e7\u00e3o independente imposs\u00edvel e exigindo ventila\u00e7\u00e3o mec\u00e2nica permanente.<\/p>\n\n<p>Al\u00e9m da imobiliza\u00e7\u00e3o completa dos membros, os pacientes sofrem de disfun\u00e7\u00e3o profunda do sistema nervoso aut\u00f4nomo. Isso se manifesta na forma de aus\u00eancia de controle sobre a mic\u00e7\u00e3o e defeca\u00e7\u00e3o, perturba\u00e7\u00f5es na regula\u00e7\u00e3o t\u00e9rmica e crises de disreflexia auton\u00f4mica potencialmente fatais (aumentos descontrolados da press\u00e3o arterial).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tetraplegia (do grego <em>tetra<\/em> \u2014 quatro e <em>plegia<\/em> \u2014 paralisia, golpe) \u2014 \u00e9 uma condi\u00e7\u00e3o neurol\u00f3gica grave, caracterizada pela perda completa dos movimentos volunt\u00e1rios e de todos os tipos de sensibilidade em ambos os bra\u00e7os, ambas as pernas e no tronco. <\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-4903","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>Tetraplegia: defini\u00e7\u00e3o 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