{"id":12647,"date":"2025-07-09T09:46:11","date_gmt":"2025-07-09T13:46:11","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/urinary-tract-infection-uti\/"},"modified":"2026-10-06T15:38:20","modified_gmt":"2026-10-06T19:38:20","slug":"infeccao-do-trato-urinario-itu","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/infeccao-do-trato-urinario-itu\/","title":{"rendered":"Infec\u00e7\u00e3o do Trato Urin\u00e1rio (ITU)"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[126],"glossary-product":[107,104,105],"class_list":["post-12647","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-urological-conditions","glossary-product-contireflex-enhanced-aus","glossary-product-infla10-pulse-ipp-series","glossary-product-rigi10-malleable-penile-prosthesis"],"acf":{"gt-definition":"<p>A infec\u00e7\u00e3o do trato urin\u00e1rio (ITU) \u00e9 uma infec\u00e7\u00e3o que afeta qualquer parte do sistema urin\u00e1rio, incluindo os rins, os ureteres, a bexiga e a uretra.<sup>1<\/sup> As ITUs ocorrem quando bact\u00e9rias, mais comumente a Escherichia coli (E. coli), entram no trato urin\u00e1rio pela uretra e come\u00e7am a se multiplicar na bexiga.<sup>2<\/sup> A infec\u00e7\u00e3o pode permanecer limitada \u00e0 bexiga (cistite) ou se disseminar para os rins (pielonefrite).<sup>3<\/sup> As ITUs caracterizam-se pela inflama\u00e7\u00e3o do epit\u00e9lio urin\u00e1rio, que leva a sintomas como dis\u00faria, polaci\u00faria, urg\u00eancia e, ocasionalmente, hemat\u00faria.<sup>4<\/sup> As mulheres t\u00eam maior risco de desenvolver ITUs do que os homens devido \u00e0 uretra mais curta e \u00e0 sua proximidade com o \u00e2nus, o que facilita a entrada de bact\u00e9rias.<sup>1<\/sup> O diagn\u00f3stico normalmente envolve exame de urina e urocultura, e o tratamento geralmente consiste em antibioticoterapia adequada com base no organismo causador e na gravidade da infec\u00e7\u00e3o.<sup>5<\/sup><\/p>","gt-synonyms":"Cistite, Infec\u00e7\u00e3o da bexiga, Infec\u00e7\u00e3o do trato urin\u00e1rio inferior (LUTI), Uretrite, S\u00edndrome uretral aguda, Urosepsis (quando a infec\u00e7\u00e3o entra na corrente sangu\u00ednea), Pielonefrite (infec\u00e7\u00e3o renal), Bacteri\u00faria (bact\u00e9rias na urina)","gt-citation":"[1] Flores-Mireles AL, Walker JN, Caparon M, Hultgren SJ. Urinary tract infections: epidemiology, mechanisms of infection and treatment options. Nat Rev Microbiol. 2015 Apr 8;13(5):269-284. DOI: 10.1038\/nrmicro3432\n\n[2] Bono MJ, Leslie SW. Uncomplicated Urinary Tract Infections. StatPearls [Internet]. 2025 Feb 21. PMID: 29261874\n\n[3] Centers for Disease Control and Prevention. Urinary Tract Infection Basics. Updated January 22, 2024. https:\/\/www.cdc.gov\/uti\/about\/index.html\n\n[4] National Institute of Diabetes and Digestive and Kidney Diseases. Bladder Infection (Urinary Tract Infection\u2014UTI) in Adults. Updated April 2024. https:\/\/www.niddk.nih.gov\/health-information\/urologic-diseases\/bladder-infection-uti-in-adults\n\n[5] Mayo Clinic. Urinary tract infection (UTI) - Symptoms and causes. Updated September 14, 2022. https:\/\/www.mayoclinic.org\/diseases-conditions\/urinary-tract-infection\/symptoms-causes\/syc-20353447","gt-clinical-context":"<p>As infec\u00e7\u00f5es do trato urin\u00e1rio (ITUs) est\u00e3o entre as infec\u00e7\u00f5es bacterianas mais comuns na pr\u00e1tica cl\u00ednica.<sup>1<\/sup> Afetam principalmente o trato urin\u00e1rio inferior, incluindo a bexiga e as estruturas associadas, embora possam ascender e acometer os rins nos casos mais graves.<sup>2<\/sup><\/p>\n    \n    <h3>Sele\u00e7\u00e3o e apresenta\u00e7\u00e3o dos pacientes<\/h3>\n    <p>As ITUs afetam predominantemente as mulheres, das quais aproximadamente 50-60% t\u00eam pelo menos uma ITU ao longo da vida.<sup>1<\/sup> Os fatores de risco incluem a anatomia feminina, a atividade sexual, certos tipos de m\u00e9todos contraceptivos (especialmente diafragmas com espermicida), a menopausa, anormalidades do trato urin\u00e1rio, obstru\u00e7\u00f5es no trato urin\u00e1rio, um sistema imunol\u00f3gico suprimido, o uso de cateter e procedimentos urin\u00e1rios recentes.<sup>3<\/sup> Nos homens, as ITUs s\u00e3o menos comuns e frequentemente associadas \u00e0 hipertrofia prost\u00e1tica, \u00e0 instrumenta\u00e7\u00e3o do trato urin\u00e1rio ou \u00e0 imunossupress\u00e3o.<sup>4<\/sup><\/p>\n\n    <h3>Abordagem diagn\u00f3stica<\/h3>\n    <p>O diagn\u00f3stico baseia-se na hist\u00f3ria cl\u00ednica, no exame de urina e na urocultura, sendo essencial a coleta adequada da amostra.<sup>2<\/sup> Dis\u00faria, polaci\u00faria, urg\u00eancia e desconforto suprap\u00fabico s\u00e3o os sintomas de apresenta\u00e7\u00e3o t\u00edpicos.<sup>3<\/sup> A avalia\u00e7\u00e3o laboratorial normalmente inclui teste com fita reagente para nitritos, esterase leucocit\u00e1ria e sangue, com exame microsc\u00f3pico para bact\u00e9rias e leuc\u00f3citos.<sup>2<\/sup> Uma urocultura com crescimento significativo de um uropat\u00f3geno em um paciente sintom\u00e1tico apoia o diagn\u00f3stico, embora o limiar de contagem de col\u00f4nias utilizado dependa do contexto cl\u00ednico.<sup>2<\/sup><\/p>\n\n    <h3>Protocolos de tratamento<\/h3>\n    <p>As ITUs n\u00e3o complicadas s\u00e3o normalmente tratadas com antibi\u00f3ticos orais, cuja escolha se baseia nos padr\u00f5es locais de resist\u00eancia.<sup>5<\/sup> As terapias de primeira linha frequentemente incluem nitrofuranto\u00edna, trimetoprima\/sulfametoxazol, fosfomicina ou pivmecilinam.<sup>2<\/sup> Para ITUs complicadas ou pielonefrite, podem ser necess\u00e1rios antibi\u00f3ticos de espectro mais amplo e tratamentos mais longos.<sup>5<\/sup> As medidas de suporte incluem aumento da ingest\u00e3o de l\u00edquidos e analg\u00e9sicos urin\u00e1rios para aliviar os sintomas.<sup>4<\/sup><\/p>\n\n    <h3>Resultados esperados<\/h3>\n    <p>Com a antibioticoterapia adequada, os sintomas normalmente melhoram em 24-48 horas.<sup>3<\/sup> As ITUs n\u00e3o complicadas geralmente se resolvem completamente com um curso de antibi\u00f3ticos de 3-7 dias.<sup>2<\/sup> No entanto, infec\u00e7\u00f5es recorrentes podem ocorrer em aproximadamente 20-30% das mulheres em at\u00e9 6 meses ap\u00f3s a infec\u00e7\u00e3o inicial.<sup>1<\/sup> As estrat\u00e9gias preventivas incluem hidrata\u00e7\u00e3o adequada, pr\u00e1ticas de higiene apropriadas, urinar ap\u00f3s a atividade sexual e, em alguns casos, antibi\u00f3ticos profil\u00e1ticos.<sup>3<\/sup><\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":114},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.7 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Infec\u00e7\u00e3o do Trato Urin\u00e1rio (ITU): Diagn\u00f3stico e Tratamento | Rigicon<\/title>\n<meta name=\"description\" content=\"Guia sobre infec\u00e7\u00e3o do trato urin\u00e1rio: cistite, pielonefrite e ITU recorrente. 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