{"id":41412,"date":"2026-02-08T10:45:08","date_gmt":"2026-02-08T13:45:08","guid":{"rendered":"https:\/\/www.grupomedcof.com.br\/blog\/?p=41412"},"modified":"2026-02-11T14:53:58","modified_gmt":"2026-02-11T17:53:58","slug":"doenca-hemolitica-perinatal","status":"publish","type":"post","link":"https:\/\/www.grupomedcof.com.br\/blog\/doenca-hemolitica-perinatal\/","title":{"rendered":"Doen\u00e7a Hemol\u00edtica Perinatal: fisiopatologia, diagn\u00f3stico, preven\u00e7\u00e3o e mais!"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-1024x576.jpg\" alt=\"\" class=\"wp-image-41416\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-1024x576.jpg 1024w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-300x169.jpg 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-768x432.jpg 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-1536x864.jpg 1536w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-747x420.jpg 747w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-150x84.jpg 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-696x392.jpg 696w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937-1068x601.jpg 1068w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/Modelo-instituicoes-2026-02-03T105458.937.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>Doen\u00e7a Hemol\u00edtica Perinatal<\/strong> \u00e9 uma anemia hemol\u00edtica <strong>altoimune<\/strong>. Embora o ant\u00edgeno RhD seja o mais comum e grave, outros ant\u00edgenos como <strong>Kell, Duffy, C, c, E e Kidd<\/strong> tamb\u00e9m podem causar a doen\u00e7a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-fisiopatologia\"><strong>Fisiopatologia<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Por que o primeiro filho geralmente \u00e9 poupado?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A resposta est\u00e1 no tipo de imunoglobulina produzida:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Resposta Prim\u00e1ria (Primeiro Contato):<\/strong> A gestante Rh negativo, ao entrar em contato com hem\u00e1cias fetais Rh positivo, produz inicialmente <strong>IgM<\/strong>. Esta mol\u00e9cula tem alto peso molecular e <strong>n\u00e3o atravessa a barreira placent\u00e1ria<\/strong>. Portanto, n\u00e3o atinge o feto.<\/li>\n\n\n\n<li><strong>Resposta Secund\u00e1ria (Mem\u00f3ria):<\/strong> Em uma nova exposi\u00e7\u00e3o, o sistema imune (j\u00e1 sensibilizado) produz <strong>IgG<\/strong>. Esta imunoglobulina \u00e9 menor, atravessa a placenta livremente e ataca as hem\u00e1cias fetais.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"207\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-12.jpeg\" alt=\"\" class=\"wp-image-41413\" style=\"width:388px;height:auto\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-12.jpeg 200w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-12-150x155.jpeg 150w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><figcaption class=\"wp-element-caption\">Representa\u00e7\u00e3o da IgG, produzida a partir da sensibiliza\u00e7\u00e3o ao ant\u00edgeno. Fonte: <a href=\"https:\/\/www.differencebetween.net\/science\/health\/difference-between-igm-and-igg\/\">https:\/\/www.differencebetween.net\/science\/health\/difference-between-igm-and-igg\/<\/a>\u00a0<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-a-cascata-da-hidropsia-fetal\"><strong>A Cascata da Hidropsia Fetal<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A hem\u00f3lise n\u00e3o gera apenas anemia; ela desencadeia uma fal\u00eancia sist\u00eamica fetal:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Hem\u00f3lise:<\/strong> Destrui\u00e7\u00e3o das hem\u00e1cias.<\/li>\n\n\n\n<li><strong>Anemia Fetal:<\/strong> Leva \u00e0 hip\u00f3xia tecidual.<\/li>\n\n\n\n<li><strong>Hematopoiese Extramedular:<\/strong> O f\u00edgado e o ba\u00e7o tentam compensar a anemia produzindo sangue, resultando em <strong>Hepatomegalia<\/strong> maci\u00e7a.<\/li>\n\n\n\n<li><strong>Disfun\u00e7\u00e3o Hep\u00e1tica e Hipertens\u00e3o Portal:<\/strong> A arquitetura do f\u00edgado \u00e9 distorcida, prejudicando a circula\u00e7\u00e3o (hipertens\u00e3o portal) e a s\u00edntese de prote\u00ednas.<\/li>\n\n\n\n<li><strong>Hipoalbuminemia:<\/strong> A queda na produ\u00e7\u00e3o de albumina reduz a press\u00e3o onc\u00f3tica do plasma.<\/li>\n\n\n\n<li><strong>Hidropsia:<\/strong> O l\u00edquido extravasa para o terceiro espa\u00e7o, causando ascite, derrame pleural e edema subcut\u00e2neo generalizado.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"649\" height=\"447\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13.jpeg\" alt=\"\" class=\"wp-image-41414\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13.jpeg 649w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13-300x207.jpeg 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13-610x420.jpeg 610w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13-150x103.jpeg 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-13-218x150.jpeg 218w\" sizes=\"auto, (max-width: 649px) 100vw, 649px\" \/><figcaption class=\"wp-element-caption\">Manifesta\u00e7\u00e3o da Hidropsia Fetal. Manifesta\u00e7\u00e3o: <a href=\"https:\/\/www.lecturio.com\/pt\/concepts\/doenca-hemolitica-do-feto-e-do-recem-nascido\/\">https:\/\/www.lecturio.com\/pt\/concepts\/doenca-hemolitica-do-feto-e-do-recem-nascido\/<\/a>\u00a0<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-refinamento-do-diagnostico-laboratorial\"><strong>Refinamento do Diagn\u00f3stico Laboratorial<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O seguimento da gestante sensibilizada (Coombs Indireto Positivo) exige aten\u00e7\u00e3o aos t\u00edtulos de anticorpos.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Coombs Indireto Positivo:<\/strong> Deve-se identificar o anticorpo e realizar a titula\u00e7\u00e3o mensal.<\/li>\n\n\n\n<li><strong>Interpreta\u00e7\u00e3o da Titula\u00e7\u00e3o:<\/strong>\n<ul class=\"wp-block-list\">\n<li><em>Est\u00e1vel:<\/em> Repetir mensalmente.<\/li>\n\n\n\n<li><em>Aumento Cr\u00edtico:<\/em> Se houver aumento de <strong>duas dilui\u00e7\u00f5es<\/strong> ou mais (ex: de 1:4 para 1:16), deve-se repetir o exame em 2 semanas.<\/li>\n\n\n\n<li><em>Ponto de Corte para Investiga\u00e7\u00e3o Fetal:<\/em> T\u00edtulos <strong>> 1:16<\/strong> (ou > 1:8 em alguns protocolos, mas seu material cita 1:16) indicam risco real de hem\u00f3lise grave e obrigam a avalia\u00e7\u00e3o do feto com Doppler.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-dopplerfluxometria-da-acm\"><strong>Dopplerfluxometria da ACM<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Por que medimos a velocidade do sangue na Art\u00e9ria Cerebral M\u00e9dia (ACM)?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na anemia fetal, a velocidade do sangue aumenta por dois motivos fisiol\u00f3gicos:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Diminui\u00e7\u00e3o da Viscosidade:<\/strong> O sangue com menos hem\u00e1cias fica &#8220;mais fino&#8221;, fluindo mais r\u00e1pido.<\/li>\n\n\n\n<li><strong>Aumento do D\u00e9bito Card\u00edaco:<\/strong> O cora\u00e7\u00e3o fetal bombeia mais forte e r\u00e1pido para compensar a baixa oxigena\u00e7\u00e3o (estado hiperdin\u00e2mico).<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Crit\u00e9rio Diagn\u00f3stico:<\/strong> Pico de Velocidade Sist\u00f3lica (PVS) <strong>> 1,5 MoM<\/strong> (M\u00faltiplos da Mediana) confirma anemia moderada a grave.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-terapeutica-invasiva-e-seus-riscos\"><strong>Terap\u00eautica Invasiva e seus Riscos<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Se a anemia for confirmada (Doppler alterado) em gesta\u00e7\u00e3o <strong>&lt; 34 semanas<\/strong>, indicamos a <strong>Cordocentese<\/strong> (pun\u00e7\u00e3o do cord\u00e3o umbilical) para Transfus\u00e3o Intrauterina (TIU).<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"539\" height=\"478\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-28.png\" alt=\"\" class=\"wp-image-41415\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-28.png 539w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-28-300x266.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-28-474x420.png 474w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/02\/image-28-150x133.png 150w\" sizes=\"auto, (max-width: 539px) 100vw, 539px\" \/><figcaption class=\"wp-element-caption\">Representa\u00e7\u00e3o ilustrativa de uma cordocentese via transplacent\u00e1ria. Fonte: <a href=\"https:\/\/www.bibliomed.com.br\/bibliomed\/bmbooks\/ginecolo\/livro17\/fig22-01.html\">https:\/\/www.bibliomed.com.br\/bibliomed\/bmbooks\/ginecolo\/livro17\/fig22-01.html<\/a><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-riscos-e-complicacoes-da-cordocentese\"><strong>Riscos e Complica\u00e7\u00f5es da Cordocentese:<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Voc\u00ea deve alertar a paciente sobre os riscos do procedimento, que incluem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Bradicardia Fetal<\/strong> (rea\u00e7\u00e3o vagal ou espasmo do vaso).<\/li>\n\n\n\n<li><strong>Sangramento<\/strong> do cord\u00e3o para o l\u00edquido amni\u00f3tico.<\/li>\n\n\n\n<li><strong>Hematoma<\/strong> ou tamponamento do cord\u00e3o.<\/li>\n\n\n\n<li><strong>Ruptura Prematura de Membranas (RPMO)<\/strong>.<\/li>\n\n\n\n<li><strong>Descolamento Prematuro de Placenta (DPP)<\/strong>.<\/li>\n\n\n\n<li><strong>\u00d3bito Fetal<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-prevencao\"><strong>Preven\u00e7\u00e3o<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A profilaxia com Imunoglobulina Anti-D deve ser feita n\u00e3o apenas na 28\u00aa semana e no p\u00f3s-parto, mas ap\u00f3s <strong>qualquer evento de risco de hemorragia feto-materna<\/strong> (at\u00e9 72h ap\u00f3s o evento).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lista de Eventos Sensibilizantes:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sangramento vaginal materno.<\/li>\n\n\n\n<li>Abortamento (espont\u00e2neo ou induzido).<\/li>\n\n\n\n<li>Gesta\u00e7\u00e3o molar ou ect\u00f3pica.<\/li>\n\n\n\n<li>\u00d3bito fetal.<\/li>\n\n\n\n<li>Trauma abdominal.<\/li>\n\n\n\n<li>Procedimentos invasivos (como amniocentese ou cordocentese).<\/li>\n\n\n\n<li>Vers\u00e3o cef\u00e1lica externa (manobra para virar o beb\u00ea p\u00e9lvico).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conquiste-a-aprovacao-e-acompanhe-mais-conteudos\"><strong>Conquiste a aprova\u00e7\u00e3o e acompanhe mais conte\u00fados!<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gostou do conte\u00fado? Continue acompanhando nosso blog para ficar por dentro das principais\u00a0<strong>not\u00edcias sobre resid\u00eancia m\u00e9dica, editais e oportunidades que podem transformar sua carreira!<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<div class=\"youtube-embed\" data-video_id=\"Dwd49Ua2_fw\"><iframe loading=\"lazy\" title=\"Entendendo as Anemias Hemol\u00edticas Heredit\u00e1rias: Causas e Sintomas. Com Dra. 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