{"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":"2025-07-09T09:46:11","modified_gmt":"2025-07-09T13:46:11","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>Uma infec\u00e7\u00e3o do trato urin\u00e1rio (ITU) \u00e9 uma infec\u00e7\u00e3o que afeta qualquer parte do sistema urin\u00e1rio, incluindo rins, ureteres, bexiga e uretra.<sup>1<\/sup> As ITUs ocorrem quando bact\u00e9rias, mais comumente Escherichia coli (E. coli), entram no trato urin\u00e1rio atrav\u00e9s da uretra e come\u00e7am a se multiplicar na bexiga.<sup>2<\/sup> A infec\u00e7\u00e3o pode permanecer limitada \u00e0 bexiga (cistite) ou pode se espalhar para os rins (pielonefrite).<sup>3<\/sup> As ITUs s\u00e3o caracterizadas por inflama\u00e7\u00e3o do epit\u00e9lio urin\u00e1rio, que leva a sintomas como dis\u00faria, frequ\u00eancia urin\u00e1ria, urg\u00eancia e, ocasionalmente, hemat\u00faria.<sup>4<\/sup> As mulheres correm maior risco de desenvolver ITUs do que os homens devido \u00e0 sua uretra mais curta e \u00e0 sua proximidade com o \u00e2nus, o que facilita a entrada bacteriana.<sup>1<\/sup> O diagn\u00f3stico normalmente envolve exame de urina e cultura de urina, com o tratamento geralmente consistindo em terapia antibi\u00f3tica apropriada com base no organismo causador e na gravidade da infec\u00e7\u00e3o.<sup>5<\/sup><\/p>\n<p>A infec\u00e7\u00e3o do trato urin\u00e1rio (ITU) \u00e9 a coloniza\u00e7\u00e3o microbiana do trato urin\u00e1rio com resposta inflamat\u00f3ria, sendo uma das infec\u00e7\u00f5es mais prevalentes. Classificada como n\u00e3o complicada (bexiga ou rins em indiv\u00edduos saud\u00e1veis) ou complicada (associada a fatores como cateter, obstru\u00e7\u00e3o, imunossupress\u00e3o). Escherichia coli \u00e9 o pat\u00f3geno mais comum (75-95% das ITU n\u00e3o complicadas), seguido por Klebsiella, Proteus e Enterococcus.<\/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 (ITU) est\u00e3o entre as infec\u00e7\u00f5es bacterianas mais comuns encontradas na pr\u00e1tica cl\u00ednica.<sup>1<\/sup> Elas afetam principalmente o trato urin\u00e1rio inferior, incluindo a bexiga e estruturas associadas, embora possam ascender e envolver os rins em casos mais graves.<sup>2<\/sup><\/p>\n \n <h3>Sele\u00e7\u00e3o e apresenta\u00e7\u00e3o de pacientes<\/h3>\n <p>As ITUs afetam predominantemente mulheres, com aproximadamente 50-60% experimentando pelo menos uma ITU durante a vida.<sup>1<\/sup> Os fatores de risco incluem anatomia feminina, atividade sexual, certos tipos de controle de natalidade (especialmente diafragmas com espermicida), menopausa, anomalias do trato urin\u00e1rio, bloqueios no trato urin\u00e1rio, sistema imunol\u00f3gico suprimido, uso de cateter e procedimentos urin\u00e1rios recentes.<sup>3<\/sup> Nos homens, as ITUs s\u00e3o menos comum e frequentemente associada \u00e0 hipertrofia prost\u00e1tica, instrumenta\u00e7\u00e3o do trato urin\u00e1rio ou imunossupress\u00e3o.<sup>4<\/sup><\/p>\n\n <h3>Abordagem de diagn\u00f3stico<\/h3>\n <p>O diagn\u00f3stico depende da hist\u00f3ria cl\u00ednica, exame de urina e cultura de urina, sendo essencial a coleta adequada de amostras.<sup>2<\/sup> A presen\u00e7a de dis\u00faria, frequ\u00eancia urin\u00e1ria, urg\u00eancia e desconforto suprap\u00fabico s\u00e3o sintomas t\u00edpicos de apresenta\u00e7\u00e3o.<sup>3<\/sup> A avalia\u00e7\u00e3o laboratorial normalmente inclui teste com tira reagente para nitritos, esterase leucocit\u00e1ria e sangue, com exame microsc\u00f3pico para bact\u00e9rias e sangue branco c\u00e9lulas.<sup>2<\/sup> Uma cultura de urina mostrando \u22651.000 unidades formadoras de col\u00f4nias por mililitro em um paciente sintom\u00e1tico \u00e9 geralmente considerada diagn\u00f3stica.<sup>2<\/sup><\/p>\n\n <h3>Protocolos de Tratamento<\/h3>\n <p>ITUs n\u00e3o complicadas s\u00e3o normalmente tratadas com antibi\u00f3ticos orais, com sele\u00e7\u00e3o baseada em padr\u00f5es de resist\u00eancia locais.<sup>5<\/sup> As terapias de primeira linha geralmente incluem nitrofuranto\u00edna, trimetoprim\/sulfametoxazol, fosfomicina ou pivmecilinam.<sup>2<\/sup> Para ITUs complicadas ou pielonefrite, antibi\u00f3ticos de espectro mais amplo e dura\u00e7\u00f5es de tratamento mais longas podem ser necess\u00e1rio.<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 terapia antibi\u00f3tica apropriada, os sintomas geralmente melhoram dentro de 24 a 48 horas.<sup>3<\/sup> As ITUs n\u00e3o complicadas geralmente se resolvem completamente com um ciclo de antibi\u00f3ticos de 3 a 7 dias.<sup>2<\/sup> No entanto, infec\u00e7\u00f5es recorrentes podem ocorrer em aproximadamente 20-30% das mulheres dentro de 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 adequadas, urinar. ap\u00f3s a atividade sexual e, em alguns casos, antibi\u00f3ticos profil\u00e1ticos.<sup>3<\/sup><\/p>\n<p>A EAU 2023 recomenda para cistite n\u00e3o complicada: nitrofuranto\u00edna, fosfomicina ou pivmecilinam como primeira linha, evitando fluoroquinolonas para preservar sua efic\u00e1cia. Para pielonefrite, fluoroquinolonas orais ou cefalosporinas s\u00e3o indicadas. ITU recorrente (\u2265 3\/ano) requer investiga\u00e7\u00e3o de fatores de risco e medidas profil\u00e1ticas: D-manose, metenamina, probi\u00f3ticos vaginais e, como \u00faltima op\u00e7\u00e3o, antibioticoprofilaxia. A resist\u00eancia antimicrobiana \u00e9 uma preocupa\u00e7\u00e3o crescente.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":78},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.8) - 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. Diagn\u00f3stico, antibioticoterapia e preven\u00e7\u00e3o. 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