{"id":1906,"date":"2025-07-23T10:09:11","date_gmt":"2025-07-23T13:09:11","guid":{"rendered":"https:\/\/lam.unitedforclinicalnutrition.com\/pt-br\/?p=1906"},"modified":"2025-07-23T10:31:23","modified_gmt":"2025-07-23T13:31:23","slug":"acesso-venoso-central","status":"publish","type":"post","link":"https:\/\/lam.unitedforclinicalnutrition.com\/pt-br\/acesso-venoso-central\/","title":{"rendered":"Acesso venoso central: o que voc\u00ea precisa saber sobre ele"},"content":{"rendered":"<p>O acesso venoso \u00e9 um dos pontos-chave na administra\u00e7\u00e3o da nutri\u00e7\u00e3o parenteral, garantindo a seguran\u00e7a e a efic\u00e1cia do tratamento. Neste artigo, abordamos os principais tipos de acesso, indica\u00e7\u00f5es e cuidados essenciais para uma terapia adequada. Confira!<\/p>\n<h2>Acesso venoso perif\u00e9rico<\/h2>\n<p>A nutri\u00e7\u00e3o parenteral perif\u00e9rica (NPP) consiste na administra\u00e7\u00e3o de nutri\u00e7\u00e3o parenteral por meio de uma veia perif\u00e9rica, geralmente utilizando uma c\u00e2nula inserida em uma veia superficial do membro superior (1).<\/p>\n<p>Esse tipo de acesso \u00e9 recomendado para <strong>terapias de curto prazo (\u226410\u201314 dias)<\/strong>, uma vez que os dispositivos venosos perif\u00e9ricos apresentam baixa confiabilidade e est\u00e3o frequentemente associados a complica\u00e7\u00f5es como flebite e extravasamento (2).<\/p>\n<p>Uma das principais limita\u00e7\u00f5es da NPP diz respeito \u00e0 adequa\u00e7\u00e3o das veias perif\u00e9ricas, que n\u00e3o suportam solu\u00e7\u00f5es de alta osmolaridade. Dessa forma, recomenda-se limitar a osmolaridade a <strong>&lt; 900 mOsm\/L<\/strong>, a fim de reduzir o risco de complica\u00e7\u00f5es (2).<\/p>\n<p>Outro ponto relevante \u00e9 que a NPP geralmente cont\u00e9m menores concentra\u00e7\u00f5es de dextrose e prote\u00edna, reduzindo a possibilidade de atender plenamente \u00e0s necessidades nutricionais do paciente (2).<\/p>\n<p>Por essa raz\u00e3o, esse tipo de acesso \u00e9 mais indicado para <strong>terapias nutricionais suplementares ou como ponte durante per\u00edodos de transi\u00e7\u00e3o<\/strong>, nos quais o estado cl\u00ednico do paciente n\u00e3o justifica a inser\u00e7\u00e3o de um dispositivo de acesso venoso central (2).<\/p>\n<h5><strong>Cateter perif\u00e9rico m\u00e9dio<\/strong><\/h5>\n<p>Os cateteres de linha m\u00e9dia s\u00e3o dispositivos de acesso venoso inseridos em veias perif\u00e9ricas das extremidades superiores, com a ponta posicionada ao redor da regi\u00e3o axilar (2).<\/p>\n<p>Diferentemente dos cateteres perif\u00e9ricos tradicionais, s\u00e3o <strong>mais longos e inseridos em veias mais profundas<\/strong>, que podem suportar solu\u00e7\u00f5es de maior osmolaridade. Assim, esses cateteres apresentam menores taxas de flebite em compara\u00e7\u00e3o aos dispositivos venosos perif\u00e9ricos convencionais (2).<\/p>\n<p>No entanto, apesar dessa vantagem, ainda h\u00e1 risco de flebite, e sua localiza\u00e7\u00e3o mais profunda pode dificultar a detec\u00e7\u00e3o de sinais e sintomas dessa complica\u00e7\u00e3o (2).<\/p>\n<p>Na tabela abaixo, est\u00e3o listados os principais pontos entre o cateter perif\u00e9rico tradicional (curto) e o cateter perif\u00e9rico m\u00e9dio (2).<\/p>\n<table class=\" aligncenter\" width=\"598\">\n<tbody>\n<tr>\n<td width=\"140\"><strong>Tipo de cateter<\/strong><\/td>\n<td width=\"136\"><strong>Coloca\u00e7\u00e3o<\/strong><\/td>\n<td width=\"155\"><strong>Limita\u00e7\u00f5es<\/strong><\/td>\n<td width=\"167\"><strong>Vantagens<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"140\"><strong>Cateter perif\u00e9rico curto<\/strong><\/td>\n<td width=\"136\">Inser\u00e7\u00e3o perif\u00e9rica percut\u00e2nea<\/td>\n<td width=\"155\">Apenas infus\u00e3o de baixa osmolaridade, alto risco de flebite<\/td>\n<td width=\"167\">F\u00e1cil de colocar, custo, menor risco de infec\u00e7\u00e3o<\/td>\n<\/tr>\n<tr>\n<td width=\"140\"><strong>Cateter perif\u00e9rico m\u00e9dio<\/strong><\/td>\n<td width=\"136\">Inser\u00e7\u00e3o perif\u00e9rica percut\u00e2nea<\/td>\n<td width=\"155\">N\u00e3o apropriado para infus\u00f5es &gt; 900 mOsm\/L (precisa de acesso central)<\/td>\n<td width=\"167\">Dura\u00e7\u00e3o de 2 a 4 semanas<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"text-align: left\">Acesso venoso central<\/h2>\n<p>O acesso venoso central consiste na administra\u00e7\u00e3o de nutri\u00e7\u00e3o parenteral por meio de um cateter cuja ponta se localiza em uma veia central (1). Esse tipo de acesso \u00e9 amplamente utilizado, sendo necess\u00e1rio em cerca de 8% dos pacientes hospitalizados (3).<\/p>\n<p>Os dispositivos de acesso venoso central permitem a infus\u00e3o de solu\u00e7\u00f5es <strong>sem restri\u00e7\u00e3o de pH, osmolaridade ou volume<\/strong>, sendo essenciais para a administra\u00e7\u00e3o de NP hiperosmolar (&gt;900 mOsm\/L) (2).<\/p>\n<p>A inser\u00e7\u00e3o pode ocorrer nas <strong>veias subcl\u00e1via, jugular interna, femoral, cef\u00e1lica ou bas\u00edlic<\/strong>a, sendo a veia femoral associada a um maior risco de infec\u00e7\u00e3o da corrente sangu\u00ednea e trombose (2).<\/p>\n<p>Os VADs centrais podem ser classificados em quatro categorias (2):<\/p>\n<ul>\n<li>Cateteres centrais de inser\u00e7\u00e3o perif\u00e9rica (PICC)<\/li>\n<li>N\u00e3o tunelizados<\/li>\n<li>Tunelizados<\/li>\n<li>Implantados<\/li>\n<\/ul>\n<p>O posicionamento correto do cateter deve ser confirmado antes do in\u00edcio da NP, por radiografia, fluoroscopia ou ultrassonografia (2).<\/p>\n<p>O uso de ultrassom para inser\u00e7\u00e3o de PICCs \u00e0 beira do leito, aliado \u00e0 orienta\u00e7\u00e3o por ECG, \u00e9 uma pr\u00e1tica comum e recomendada para reduzir complica\u00e7\u00f5es e aumentar a seguran\u00e7a do procedimento (2).<\/p>\n<p>A dura\u00e7\u00e3o do uso varia conforme o tipo de cateter. Os CVCs n\u00e3o tunelizados s\u00e3o indicados para at\u00e9 tr\u00eas semanas, enquanto os PICCs podem ser utilizados por at\u00e9 tr\u00eas a quatro meses (3, 4). Cateteres tunelizados e implant\u00e1veis s\u00e3o op\u00e7\u00f5es para uso prolongado, podendo durar anos (3).<\/p>\n<p>Abaixo, est\u00e3o resumidos os principais pontos dos cateteres de acesso venoso central (2, 4).<\/p>\n<table class=\" aligncenter\" width=\"605\">\n<tbody>\n<tr>\n<td width=\"138\"><strong>Tipo de cateter<\/strong><\/td>\n<td width=\"127\"><strong>Coloca\u00e7\u00e3o<\/strong><\/td>\n<td width=\"143\"><strong>Limita\u00e7\u00f5es<\/strong><\/td>\n<td width=\"197\"><strong>Vantagens<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"138\"><strong>Cateteres centrais de inser\u00e7\u00e3o perif\u00e9rica (PICC)<\/strong><\/td>\n<td width=\"127\">Coloca\u00e7\u00e3o percut\u00e2nea por meio de uma veia perif\u00e9rica (veia bas\u00edlica, cef\u00e1lica ou braquial)<\/td>\n<td width=\"143\">Autocuidado dif\u00edcil, desconfort\u00e1vel por longos per\u00edodos, coloca\u00e7\u00e3o precisa de pessoal treinado, aumenta o risco de trombose venosa profunda<\/td>\n<td width=\"197\">Baixo risco de complica\u00e7\u00f5es de coloca\u00e7\u00e3o. Usado em ambientes de cuidados agudos e domiciliares. F\u00e1cil de remover. Dura\u00e7\u00e3o de semanas a meses<\/td>\n<\/tr>\n<tr>\n<td width=\"138\"><strong>Cateter central n\u00e3o tunelizado<\/strong><\/td>\n<td width=\"127\">Veia subcl\u00e1via, jugular ou femoral<\/td>\n<td width=\"143\">Sala de cirurgia ou ambiente hospitalar para coloca\u00e7\u00e3o<\/td>\n<td width=\"197\">Uso de longo prazo, f\u00e1cil autocuidado<\/td>\n<\/tr>\n<tr>\n<td width=\"138\"><strong>Cateter central tunelizado<\/strong><\/td>\n<td width=\"127\">Subcl\u00e1via ou jugular (tipos Hickman, Broviac, Hohn)<\/td>\n<td width=\"143\">Ambiente hospitalar, pequeno procedimento para remo\u00e7\u00e3o<\/td>\n<td width=\"197\">Menor risco de infec\u00e7\u00e3o, a posi\u00e7\u00e3o no peito facilita o autocuidado, desconex\u00e3o facilitada, dura\u00e7\u00e3o de meses a anos (NP domiciliar)<\/td>\n<\/tr>\n<tr>\n<td width=\"138\"><strong>Implantados<\/strong><\/td>\n<td width=\"127\">Subcl\u00e1via ou jugular<\/td>\n<td width=\"143\">Ambiente hospitalar, procedimento cir\u00fargico para remo\u00e7\u00e3o, acesso \u00e0 agulha necess\u00e1rio, exigem pun\u00e7\u00e3o frequente<\/td>\n<td width=\"197\">Associado a menor risco de infec\u00e7\u00e3o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 style=\"text-align: left\">Que tipo de cateter \u00e9 recomendado para NP hospitalar e NP domiciliar?<\/h2>\n<p>Segundo a Sociedade Brasileira de Nutri\u00e7\u00e3o Parenteral e Enteral (BRASPEN), para pacientes hospitalizados, a NP pode ser infundida por <strong>cateteres venosos centrais (CVC) n\u00e3o tunelizados, cateteres PICC ou cateteres venosos perif\u00e9ricos<\/strong> (4).<\/p>\n<p>A escolha do tipo de cateter depende de fatores como a estabilidade cl\u00ednica do paciente, risco de infec\u00e7\u00e3o, terapias intravenosas concomitantes, dura\u00e7\u00e3o prevista e o tipo de f\u00f3rmula utilizada (2, 4).<\/p>\n<p>Em casos de NP de curta dura\u00e7\u00e3o (-poucos dias) e com osmolaridade &lt; 900 mOsm\/L,<strong> cateteres perif\u00e9ricos <\/strong>podem ser utilizados (4).<\/p>\n<p>J\u00e1 para a NP domiciliar, os cateteres preferenciais s\u00e3o o <strong>CVC tunelizado <\/strong>(&gt;3 meses) <strong>ou PICC<\/strong> (at\u00e9 3-4 meses) (4).<\/p>\n<h2>Qual \u00e9 a periodicidade de troca dos cateteres venosos da NP?<\/h2>\n<p>Em rela\u00e7\u00e3o \u00e0 troca de cateteres venosos, n\u00e3o h\u00e1 recomenda\u00e7\u00e3o fixa para a substitui\u00e7\u00e3o de cateteres perif\u00e9ricos com menos de 96 horas, nem para cateteres venosos centrais de forma rotineira (3).<\/p>\n<p>As trocas devem ser realizadas quando houver <strong>sinais cl\u00ednicos de infec\u00e7\u00e3o ou mau funcionamento do cateter <\/strong>(3).<\/p>\n<p>Estudos n\u00e3o demonstraram benef\u00edcios na redu\u00e7\u00e3o das taxas de infec\u00e7\u00e3o com a substitui\u00e7\u00e3o programada de cateteres venosos centrais, portanto, estes devem ser mantidos enquanto estiverem funcionais, sem sinais de complica\u00e7\u00f5es locais ou sist\u00eamicas. Caso contr\u00e1rio, devem ser removidos prontamente (3).<\/p>\n<h5><strong>Conclus\u00e3o<\/strong><\/h5>\n<p>Em resumo, a escolha do tipo de acesso venoso na nutri\u00e7\u00e3o parenteral depende de diversos fatores, como a dura\u00e7\u00e3o do tratamento, a osmolaridade das solu\u00e7\u00f5es e a condi\u00e7\u00e3o cl\u00ednica do paciente. Cada tipo de cateter apresenta vantagens e limita\u00e7\u00f5es espec\u00edficas, sendo importante a sele\u00e7\u00e3o adequada para garantir a seguran\u00e7a e efic\u00e1cia do tratamento.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Refer\u00eancias:<\/p>\n<p>1\u00a0 &#8211; Khan A, Laing E, Beaumont A, Wong J, Warrier S, Heriot A. Peripheral parenteral nutrition in surgery &#8211; a systematic review and meta-analysis. Clin Nutr ESPEN. 2023 Apr;54:337-348.<\/p>\n<p>2 &#8211; Berlana D. Parenteral Nutrition Overview. Nutrients. 2022 Oct 25;14(21):4480.<\/p>\n<p>3 &#8211; Kehagias E, Galanakis N, Tsetis D. Central venous catheters: Which, when and how. Br J Radiol. 2023 Nov;96(1151):20220894.<\/p>\n<p>4 &#8211; Gon\u00e7alves RC, de Matos LBN, Cunha HFR, Totti F, Kawagoe JY, Martin LGR, Correia MITD. Manual BRASPEN de compet\u00eancias relacionadas \u00e0 dispensa\u00e7\u00e3o e \u00e0 administra\u00e7\u00e3o de nutri\u00e7\u00e3o parenteral. BRASPEN Journal. 2023;34(3):217-232.<\/p>\n<p>5 &#8211; Matsuba CST, Serpa LF, Pereira SRM, Barbosa JAG, Corr\u00eaa APA, de Souza Antunes M, Castro MG. Diretriz BRASPEN de enfermagem em terapia nutricional oral, enteral e parenteral. BRASPEN Journal. 2023;36(3, Supl 3):0-0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O acesso venoso \u00e9 um dos pontos-chave na administra\u00e7\u00e3o da nutri\u00e7\u00e3o parenteral, garantindo a seguran\u00e7a e a efic\u00e1cia do tratamento. Neste artigo, abordamos os principais tipos de acesso, indica\u00e7\u00f5es e cuidados essenciais para uma terapia adequada. Confira! Acesso venoso perif\u00e9rico A nutri\u00e7\u00e3o parenteral perif\u00e9rica (NPP) consiste na administra\u00e7\u00e3o de nutri\u00e7\u00e3o parenteral por meio de uma [&hellip;]<\/p>\n","protected":false},"author":5902,"featured_media":2069,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[49],"tags":[196,120,206,67,216],"class_list":["post-1906","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artigo-5","tag-acesso-venoso-central","tag-cateter","tag-complicacoes","tag-nutricao-parenteral","tag-paciente-grave"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Acesso Venoso na Nutri\u00e7\u00e3o Parenteral: Tipos e Cuidados<\/title>\n<meta name=\"description\" content=\"O acesso venoso central \u00e9 \u00fatil para o suporte a pacientes 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