{"id":1452,"date":"2025-09-18T15:39:31","date_gmt":"2025-09-18T12:39:31","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/linha-de-demarcacao\/"},"modified":"2025-10-07T19:13:56","modified_gmt":"2025-10-07T16:13:56","slug":"linha-de-demarcacao","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/pt\/glossario\/linha-de-demarcacao\/","title":{"rendered":"Linha de demarca\u00e7\u00e3o"},"content":{"rendered":"\n<p>A linha de demarca\u00e7\u00e3o \u00e9 um limite vis\u00edvel que se forma no corpo entre \u00e1rea necr\u00f3tica (morta) e tecido saud\u00e1vel e vi\u00e1vel. Representa uma \u00e1rea estreita de inflama\u00e7\u00e3o reativa.<\/p>\n\n<p>O surgimento dessa linha \u00e9 uma rea\u00e7\u00e3o protetora do organismo, destinada a separar os tecidos mortos dos vivos. \u00c9 um importante sinal cl\u00ednico e progn\u00f3stico, especialmente na avalia\u00e7\u00e3o de condi\u00e7\u00f5es como a gangrena.<\/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>A linha de demarca\u00e7\u00e3o \u00e9 mais vis\u00edvel na necrose seca (coagulativa), cujo exemplo cl\u00e1ssico \u00e9 a gangrena seca dos membros, que se desenvolve devido \u00e0 interrup\u00e7\u00e3o do suprimento sangu\u00edneo arterial (isquemia).<\/p>\n\n<p>Do ponto de vista fisiopatol\u00f3gico, ocorre uma rea\u00e7\u00e3o inflamat\u00f3ria na borda da \u00e1rea necrosada nos tecidos vi\u00e1veis. Ocorre dilata\u00e7\u00e3o dos vasos sangu\u00edneos (hiperemia) e migra\u00e7\u00e3o de leuc\u00f3citos. Esta \u00e1rea de inflama\u00e7\u00e3o ativa parece visualmente uma faixa vermelha e azul brilhante, denominada linha de demarca\u00e7\u00e3o.<\/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>Signific\u00e2ncia cl\u00ednica<\/strong><\/h2>\n\n<p>A linha de demarca\u00e7\u00e3o tem uma enorme import\u00e2ncia pr\u00e1tica na cirurgia. Representa um ponto de refer\u00eancia fi\u00e1vel para o cirurgi\u00e3o, indicando limites do tecido morto. Isto permite determinar o limiar correto para realizar uma amputa\u00e7\u00e3o ou necrectomia (remo\u00e7\u00e3o de tecidos necrosados).<\/p>\n\n<p>O n\u00edvel de interven\u00e7\u00e3o devidamente definido pela linha de demarca\u00e7\u00e3o assegura a remo\u00e7\u00e3o de todos os tecidos n\u00e3o vi\u00e1veis, o que garante a cicatriza\u00e7\u00e3o bem-sucedida da ferida.<\/p>\n\n<p>Al\u00e9m disso, a presen\u00e7a de uma linha de demarca\u00e7\u00e3o bem definida \u00e9 um sinal progn\u00f3stico favor\u00e1vel, indicando que o processo de necrose est\u00e1 delimitado e n\u00e3o se espalha. A aus\u00eancia ou imprecis\u00e3o desta linha pode indicar a evolu\u00e7\u00e3o da necrose e uma situa\u00e7\u00e3o mais grave.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A linha de demarca\u00e7\u00e3o \u00e9 um limite vis\u00edvel que se forma no corpo entre \u00e1rea necr\u00f3tica (morta) e tecido saud\u00e1vel e vi\u00e1vel. Representa uma \u00e1rea estreita de inflama\u00e7\u00e3o reativa.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1452","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>Linha de demarca\u00e7\u00e3o: defini\u00e7\u00e3o m\u00e9dica e vis\u00e3o geral | Voka Wiki<\/title>\n<meta name=\"description\" content=\"A linha de demarca\u00e7\u00e3o \u00e9 um limite vis\u00edvel que se forma no corpo entre \u00e1rea necr\u00f3tica (morta) e tecido saud\u00e1vel e vi\u00e1vel. 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