{"id":41183,"date":"2026-01-29T09:31:21","date_gmt":"2026-01-29T12:31:21","guid":{"rendered":"https:\/\/www.grupomedcof.com.br\/blog\/?p=41183"},"modified":"2026-01-29T09:31:23","modified_gmt":"2026-01-29T12:31:23","slug":"diarreia-cronica","status":"publish","type":"post","link":"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/","title":{"rendered":"Diarreia Cr\u00f4nica: fisiopatologia, diagn\u00f3stico diferencial e investiga\u00e7\u00e3o avan\u00e7ada"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_74 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Sum\u00e1rio<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar tabela de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#O_que_e_diarreia_cronica\" >O que \u00e9 diarreia cr\u00f4nica?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Fisiopatologia_da_diarreia_cronica\" >Fisiopatologia da diarreia cr\u00f4nica<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Classificacao_topografica\" >Classifica\u00e7\u00e3o topogr\u00e1fica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Classificacao_fisiopatologica\" >Classifica\u00e7\u00e3o fisiopatol\u00f3gica<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Investigacao_laboratorial_na_diarreia_cronica\" >Investiga\u00e7\u00e3o laboratorial na diarreia cr\u00f4nica<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Avaliacao_inflamatoria\" >Avalia\u00e7\u00e3o inflamat\u00f3ria<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Avaliacao_de_ma_absorcao\" >Avalia\u00e7\u00e3o de m\u00e1 absor\u00e7\u00e3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Marcadores_especificos\" >Marcadores espec\u00edficos<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Doenca_celiaca_aspectos_diagnosticos_relevantes\" >Doen\u00e7a cel\u00edaca: aspectos diagn\u00f3sticos relevantes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Intolerancia_a_lactose\" >Intoler\u00e2ncia \u00e0 lactose<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Supercrescimento_bacteriano_do_intestino_delgado_SIBO\" >Supercrescimento bacteriano do intestino delgado (SIBO)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Doenca_de_Whipple\" >Doen\u00e7a de Whipple<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Colite_microscopica\" >Colite microsc\u00f3pica<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Sindrome_do_Intestino_Irritavel\" >S\u00edndrome do Intestino Irrit\u00e1vel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.grupomedcof.com.br\/blog\/diarreia-cronica\/#Estude_diarreia_cronica_com_quem_prepara_para_a_residencia\" >Estude diarreia cr\u00f4nica com quem prepara para a resid\u00eancia<\/a><\/li><\/ul><\/nav><\/div>\n\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\/01\/Blog-MedCof-2026-01-29T092709.325-1024x576.jpg\" alt=\"\" class=\"wp-image-41192\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-1024x576.jpg 1024w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-300x169.jpg 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-768x432.jpg 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-1536x864.jpg 1536w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-747x420.jpg 747w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-150x84.jpg 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-696x392.jpg 696w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325-1068x601.jpg 1068w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/Blog-MedCof-2026-01-29T092709.325.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>A <strong>diarreia cr\u00f4nica <\/strong>\u00e9 uma condi\u00e7\u00e3o frequente na pr\u00e1tica cl\u00ednica e representa um desafio diagn\u00f3stico relevante, especialmente no contexto ambulatorial e hospitalar. Diferentemente da diarreia aguda, geralmente autolimitada, a <strong>diarreia cr\u00f4nica \u2014 definida como aquela com dura\u00e7\u00e3o superior a quatro semanas \u2014 exige uma abordagem sistematizada<\/strong>, com avalia\u00e7\u00e3o detalhada dos mecanismos fisiopatol\u00f3gicos e amplo diagn\u00f3stico diferencial, que inclui desde dist\u00farbios funcionais at\u00e9 doen\u00e7as inflamat\u00f3rias e neoplasias raras Diarreia Cr\u00f4nica.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-o-que-e-diarreia-cronica\"><span class=\"ez-toc-section\" id=\"O_que_e_diarreia_cronica\"><\/span><strong>O que \u00e9 diarreia cr\u00f4nica?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Define-se diarreia cr\u00f4nica como a <strong>presen\u00e7a de fezes amolecidas ou l\u00edquidas<\/strong> por per\u00edodo superior a <strong>4 semanas<\/strong>. A avalia\u00e7\u00e3o inicial deve considerar n\u00e3o apenas a dura\u00e7\u00e3o, mas tamb\u00e9m <strong>volume, frequ\u00eancia, caracter\u00edsticas das fezes e sintomas associados<\/strong>, elementos fundamentais para orientar a investiga\u00e7\u00e3o etiol\u00f3gica.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-fisiopatologia-da-diarreia-cronica\"><span class=\"ez-toc-section\" id=\"Fisiopatologia_da_diarreia_cronica\"><\/span><strong>Fisiopatologia da diarreia cr\u00f4nica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A compreens\u00e3o da fisiopatologia \u00e9 o primeiro passo para um racioc\u00ednio diagn\u00f3stico eficiente. A diarreia cr\u00f4nica pode ser classificada de acordo com <strong>a topografia intestinal<\/strong> e <strong>o mecanismo fisiopatol\u00f3gico predominante<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Classificacao_topografica\"><\/span><strong>Classifica\u00e7\u00e3o topogr\u00e1fica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Diarreia alta (intestino delgado)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Volume:<\/strong> elevado;<\/li>\n\n\n\n<li><strong>Frequ\u00eancia:<\/strong> menor;<\/li>\n\n\n\n<li><strong>Caracter\u00edsticas:<\/strong> presen\u00e7a de restos alimentares (lienteria), aus\u00eancia de tenesmo;<\/li>\n\n\n\n<li><strong>Mecanismo predominante:<\/strong> disabsortivo ou osm\u00f3tico.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Diarreia baixa (intestino grosso)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Volume:<\/strong> pequeno;<\/li>\n\n\n\n<li><strong>Frequ\u00eancia:<\/strong> aumentada;<\/li>\n\n\n\n<li><strong>Caracter\u00edsticas:<\/strong> tenesmo, muco e\/ou sangue;<\/li>\n\n\n\n<li><strong>Mecanismo predominante:<\/strong> inflamat\u00f3rio.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Classificacao_fisiopatologica\"><\/span><strong>Classifica\u00e7\u00e3o fisiopatol\u00f3gica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Diarreia osm\u00f3tica:<\/strong> cessa com o jejum; associada a solutos n\u00e3o absorvidos no l\u00famen (ex.: intoler\u00e2ncia \u00e0 lactose, uso de magn\u00e9sio ou ado\u00e7antes). Gap osmolar fecal elevado (&gt;125 mOsm\/kg).<\/li>\n\n\n\n<li><strong>Diarreia secret\u00f3ria:<\/strong> persiste mesmo em jejum; grande volume fecal; associada a est\u00edmulos de secre\u00e7\u00e3o intestinal (ex.: s\u00edndrome carcinoide, \u00e1cidos biliares). Gap osmolar baixo (&lt;50 mOsm\/kg).<\/li>\n\n\n\n<li><strong>Diarreia disabsortiva:<\/strong> caracterizada por esteatorreia; causas incluem insufici\u00eancia pancre\u00e1tica, doen\u00e7a cel\u00edaca e supercrescimento bacteriano.<\/li>\n\n\n\n<li><strong>Diarreia inflamat\u00f3ria:<\/strong> presen\u00e7a de sangue, muco ou leuc\u00f3citos nas fezes; associada a DII, colite act\u00ednica e neoplasias.<\/li>\n\n\n\n<li><strong>Diarreia por dismotilidade:<\/strong> relacionada a altera\u00e7\u00f5es do tr\u00e2nsito intestinal (ex.: diabetes, hipertireoidismo, p\u00f3s-vagotomia).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-investigacao-laboratorial-na-diarreia-cronica\"><span class=\"ez-toc-section\" id=\"Investigacao_laboratorial_na_diarreia_cronica\"><\/span><strong>Investiga\u00e7\u00e3o laboratorial na diarreia cr\u00f4nica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Al\u00e9m dos exames b\u00e1sicos, a investiga\u00e7\u00e3o deve ser direcionada conforme suspeita cl\u00ednica.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Avaliacao_inflamatoria\"><\/span><strong>Avalia\u00e7\u00e3o inflamat\u00f3ria<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Calprotectina fecal:<\/strong>\n<ul class=\"wp-block-list\">\n<li>&lt; 50 \u00b5g\/g: sugere s\u00edndrome do intestino irrit\u00e1vel;<\/li>\n\n\n\n<li>150 \u00b5g\/g: indica inflama\u00e7\u00e3o intestinal ativa.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Avaliacao_de_ma_absorcao\"><\/span><strong>Avalia\u00e7\u00e3o de m\u00e1 absor\u00e7\u00e3o<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SUDAM:<\/strong> pesquisa qualitativa de gordura fecal.<\/li>\n\n\n\n<li><strong>Elastase fecal:<\/strong> avalia\u00e7\u00e3o da fun\u00e7\u00e3o pancre\u00e1tica ex\u00f3crina.<\/li>\n\n\n\n<li><strong>Vitaminas B12 e \u00e1cido f\u00f3lico:<\/strong> \u00fateis na suspeita de SIBO.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Marcadores_especificos\"><\/span><strong>Marcadores espec\u00edficos<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gastrina e VIP:<\/strong> suspeita de gastrinoma ou VIPoma;<\/li>\n\n\n\n<li><strong>Triptase s\u00e9rica:<\/strong> mastocitose sist\u00eamica;<\/li>\n\n\n\n<li><strong>5-HIAA urin\u00e1rio (24h):<\/strong> s\u00edndrome carcinoide.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-doenca-celiaca-aspectos-diagnosticos-relevantes\"><span class=\"ez-toc-section\" id=\"Doenca_celiaca_aspectos_diagnosticos_relevantes\"><\/span><strong>Doen\u00e7a cel\u00edaca: aspectos diagn\u00f3sticos relevantes<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A <strong>bi\u00f3psia duodenal \u00e9 o padr\u00e3o-ouro<\/strong>, por\u00e9m a sorologia orienta a indica\u00e7\u00e3o do procedimento.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sorologia inicial:<\/strong> Anti-transglutaminase tecidual (Anti-TTG IgA) + IgA total;<\/li>\n\n\n\n<li><strong>Defici\u00eancia de IgA:<\/strong> solicitar Anti-TTG IgG ou anti-gliadina deaminada IgG;<\/li>\n\n\n\n<li><strong>HLA DQ2\/DQ8:<\/strong> alto valor preditivo negativo; \u00fatil em casos duvidosos ou pacientes j\u00e1 em dieta sem gl\u00faten;<\/li>\n\n\n\n<li><strong>Achados histol\u00f3gicos:<\/strong> atrofia vilosit\u00e1ria, hiperplasia de criptas e linfocitose intraepitelial.<\/li>\n<\/ul>\n\n\n\n<p>A persist\u00eancia de sintomas ap\u00f3s 12 meses de dieta rigorosa caracteriza <strong>doen\u00e7a cel\u00edaca refrat\u00e1ria<\/strong>, sendo obrigat\u00f3ria a exclus\u00e3o de linfoma intestinal.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"318\" height=\"289\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-72.png\" alt=\"\" class=\"wp-image-41184\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-72.png 318w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-72-300x273.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-72-150x136.png 150w\" sizes=\"auto, (max-width: 318px) 100vw, 318px\" \/><figcaption class=\"wp-element-caption\">Endoscopia de intestino normal. Fonte: Acervo de aulas do Grupo MedCof.&nbsp;&nbsp;<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"328\" height=\"266\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-73.png\" alt=\"\" class=\"wp-image-41185\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-73.png 328w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-73-300x243.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-73-150x122.png 150w\" sizes=\"auto, (max-width: 328px) 100vw, 328px\" \/><figcaption class=\"wp-element-caption\">Endoscopia de intestino na doen\u00e7a cel\u00edaca. Fonte: Acervo de Aulas do Grupo MedCof.&nbsp;<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-intolerancia-a-lactose\"><span class=\"ez-toc-section\" id=\"Intolerancia_a_lactose\"><\/span><strong>Intoler\u00e2ncia \u00e0 lactose<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u00c9 fundamental diferenciar <strong>defici\u00eancia de lactase<\/strong> de <strong>alergia \u00e0 prote\u00edna do leite<\/strong>.<\/p>\n\n\n\n<p>Principais m\u00e9todos diagn\u00f3sticos:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Teste gen\u00e9tico (MCM6):<\/strong> gen\u00f3tipo C\/C indica hipolactasia prim\u00e1ria;<\/li>\n\n\n\n<li><strong>Teste respirat\u00f3rio com hidrog\u00eanio:<\/strong> aumento do H\u2082 ap\u00f3s ingest\u00e3o de lactose;<\/li>\n\n\n\n<li><strong>Teste de toler\u00e2ncia oral \u00e0 lactose:<\/strong> aus\u00eancia de eleva\u00e7\u00e3o glic\u00eamica significativa.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-supercrescimento-bacteriano-do-intestino-delgado-sibo\"><span class=\"ez-toc-section\" id=\"Supercrescimento_bacteriano_do_intestino_delgado_SIBO\"><\/span><strong>Supercrescimento bacteriano do intestino delgado (SIBO)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Caracteriza-se pela migra\u00e7\u00e3o de bact\u00e9rias do c\u00f3lon para o intestino delgado.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Perfil laboratorial t\u00edpico:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Vitamina B12 reduzida<\/li>\n\n\n\n<li>\u00c1cido f\u00f3lico elevado<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Diagn\u00f3stico:<\/strong> teste respirat\u00f3rio com lactulose ou glicose\n<ul class=\"wp-block-list\">\n<li>Positivo se aumento de H\u2082 &gt; 20 ppm em at\u00e9 90 minutos<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Tratamento:<\/strong> rifaximina ou antibi\u00f3ticos sist\u00eamicos (ciprofloxacino, metronidazol)<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"510\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-74.png\" alt=\"\" class=\"wp-image-41186\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-74.png 602w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-74-300x254.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-74-496x420.png 496w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-74-150x127.png 150w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><figcaption class=\"wp-element-caption\">Fluxograma do desenvolvimento e diagn\u00f3stico do SIBO. Fonte: Acervo de aulas do Grupo MedCof.&nbsp;<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-doenca-de-whipple\"><span class=\"ez-toc-section\" id=\"Doenca_de_Whipple\"><\/span><strong>Doen\u00e7a de Whipple<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Infec\u00e7\u00e3o sist\u00eamica rara causada por <em>Tropheryma whipplei<\/em>.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Tr\u00edade cl\u00e1ssica:<\/strong> diarreia cr\u00f4nica, perda ponderal e artralgia migrat\u00f3ria;<\/li>\n\n\n\n<li><strong>Achados neurol\u00f3gicos:<\/strong> miorritmia oculomastigat\u00f3ria (patognom\u00f4nica);<\/li>\n\n\n\n<li><strong>Diagn\u00f3stico:<\/strong> bi\u00f3psia duodenal com macr\u00f3fagos PAS positivos;<\/li>\n\n\n\n<li><strong>Tratamento:<\/strong> antibi\u00f3ticoterapia bif\u00e1sica (indu\u00e7\u00e3o IV seguida de manuten\u00e7\u00e3o oral prolongada).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"695\" height=\"593\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-75.png\" alt=\"\" class=\"wp-image-41187\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-75.png 695w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-75-300x256.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-75-492x420.png 492w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-75-150x128.png 150w\" sizes=\"auto, (max-width: 695px) 100vw, 695px\" \/><figcaption class=\"wp-element-caption\">Fonte: <a href=\"https:\/\/www.researchgate.net\/figure\/llustrative-image-of-PAS-positive-Tropheryma-whipplei-bacteria-in-human-macrophages_fig4_338013390\">https:\/\/www.researchgate.net\/figure\/llustrative-image-of-PAS-positive-Tropheryma-whipplei-bacteria-in-human-macrophages_fig4_338013390<\/a>&nbsp;<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-colite-microscopica\"><span class=\"ez-toc-section\" id=\"Colite_microscopica\"><\/span><strong>Colite microsc\u00f3pica<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Caracteriza-se por diarreia aquosa cr\u00f4nica, principalmente em mulheres idosas, com colonoscopia macroscopicamente normal.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Associa\u00e7\u00e3o medicamentosa:<\/strong> AINEs, IBPs, sertralina.<\/li>\n\n\n\n<li><strong>Subtipos histol\u00f3gicos:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Colite linfoc\u00edtica<\/li>\n\n\n\n<li>Colite colagenosa<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Tratamento:<\/strong> suspens\u00e3o da droga causal, loperamida ou budesonida.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-sindrome-do-intestino-irritavel\"><span class=\"ez-toc-section\" id=\"Sindrome_do_Intestino_Irritavel\"><\/span><strong>S\u00edndrome do Intestino Irrit\u00e1vel <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Diagn\u00f3stico de exclus\u00e3o, baseado nos <strong>crit\u00e9rios de Roma IV<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"565\" height=\"300\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-76.png\" alt=\"\" class=\"wp-image-41188\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-76.png 565w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-76-300x159.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-76-150x80.png 150w\" sizes=\"auto, (max-width: 565px) 100vw, 565px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"858\" height=\"220\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77.png\" alt=\"\" class=\"wp-image-41189\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77.png 858w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77-300x77.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77-768x197.png 768w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77-150x38.png 150w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-77-696x178.png 696w\" sizes=\"auto, (max-width: 858px) 100vw, 858px\" \/><figcaption class=\"wp-element-caption\">Fluxograma de interpreta\u00e7\u00e3o dos crit\u00e9rios de Roma IV. Fonte: Acervo de aulas do Grupo MedCof.&nbsp;<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Subtipos (Escala de Bristol):<\/strong>\n<ul class=\"wp-block-list\">\n<li>SII-C, SII-D e SII-M.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Tratamento:<\/strong>\n<ul class=\"wp-block-list\">\n<li>Antiespasm\u00f3dicos;<\/li>\n\n\n\n<li>Loperamida ou laxantes;<\/li>\n\n\n\n<li>Antidepressivos como moduladores da dor visceral.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"643\" height=\"399\" src=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-78.png\" alt=\"\" class=\"wp-image-41190\" srcset=\"https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-78.png 643w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-78-300x186.png 300w, https:\/\/www.grupomedcof.com.br\/blog\/wp-content\/uploads\/2026\/01\/image-78-150x93.png 150w\" sizes=\"auto, (max-width: 643px) 100vw, 643px\" \/><figcaption class=\"wp-element-caption\">Subtipos conforme escala de Bristol. Fonte: Acervo de aulas do Grupo MedCof.&nbsp;<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-estude-diarreia-cronica-com-quem-prepara-para-a-residencia\"><span class=\"ez-toc-section\" id=\"Estude_diarreia_cronica_com_quem_prepara_para_a_residencia\"><\/span><strong>Estude diarreia cr\u00f4nica com quem prepara para a resid\u00eancia<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Quer aprofundar o racioc\u00ednio diagn\u00f3stico em gastroenterologia e dominar temas como diarreia cr\u00f4nica, SIBO, doen\u00e7a cel\u00edaca e DII com foco em prova e pr\u00e1tica cl\u00ednica?<\/p>\n\n\n\n<p>No <strong>MedCof<\/strong>, voc\u00ea estuda com aulas objetivas, fluxogramas claros e professores que vivem a resid\u00eancia m\u00e9dica. <strong>Conhe\u00e7a o m\u00e9todo MedCof e prepare-se para diagnosticar com seguran\u00e7a e passar na resid\u00eancia<\/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=\"sVuACnUYxOs\"><iframe loading=\"lazy\" title=\"Diarreia Cr\u00f4nica: O Que Voc\u00ea Precisa Saber. Com Dr. Rafael Bandeira\" width=\"696\" height=\"392\" src=\"https:\/\/www.youtube.com\/embed\/sVuACnUYxOs?feature=oembed&#038;enablejsapi=1\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Diarreia cr\u00f4nica: entenda a fisiopatologia, mecanismos, diagn\u00f3stico diferencial e investiga\u00e7\u00e3o avan\u00e7ada. Conte\u00fado completo para residentes m\u00e9dicos.<\/p>\n","protected":false},"author":21,"featured_media":41192,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69],"tags":[3494,3490,3493,3491,3495,3492],"ppma_author":[3617],"class_list":{"0":"post-41183","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-gastroenterologia","8":"tag-colite-microscopica","9":"tag-doenca-celiaca","10":"tag-doenca-de-whipple","11":"tag-intolerancia-a-lactose","12":"tag-sindrome-do-intestino-irritavel","13":"tag-supercrescimento-bacteriano-do-intestino-delgado"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.3 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Diarreia Cr\u00f4nica: fisiopatologia, diagn\u00f3stico diferencial e investiga\u00e7\u00e3o avan\u00e7ada - Blog de Medcof: conte\u00fados, editais, revalida e mais!<\/title>\n<meta name=\"description\" content=\"Diarreia cr\u00f4nica: entenda a fisiopatologia, mecanismos, diagn\u00f3stico diferencial e investiga\u00e7\u00e3o avan\u00e7ada. 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