{"id":12704,"date":"2025-07-17T03:32:00","date_gmt":"2025-07-17T07:32:00","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/urinary-antiseptics\/"},"modified":"2025-07-17T03:32:00","modified_gmt":"2025-07-17T07:32:00","slug":"antissepticos-urinarios","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/antissepticos-urinarios\/","title":{"rendered":"Antiss\u00e9pticos Urin\u00e1rios"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[114],"glossary-product":[108,107],"class_list":["post-12704","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-urological-agents","glossary-product-conticlassic-aus","glossary-product-contireflex-enhanced-aus"],"acf":{"gt-definition":"<p>Os antiss\u00e9pticos urin\u00e1rios s\u00e3o agentes orais que exercem atividade antibacteriana na urina, mas t\u00eam pouco ou nenhum efeito antibacteriano sist\u00eamico.<sup>1<\/sup> Esses medicamentos s\u00e3o projetados especificamente para atingir concentra\u00e7\u00f5es terap\u00eauticas apenas na urina, tornando-os eficazes no tratamento e preven\u00e7\u00e3o de infec\u00e7\u00f5es do trato urin\u00e1rio (ITUs).<sup>2<\/sup> Seu objetivo principal \u00e9 inibir ou matar microorganismos no trato urin\u00e1rio, minimizando ao mesmo tempo o sistema sist\u00eamico. efeitos.<sup>3<\/sup><\/p>\n \n <p>Os anti-s\u00e9pticos urin\u00e1rios atuam atrav\u00e9s de v\u00e1rios mecanismos, dependendo do agente espec\u00edfico. Por exemplo, a nitrofuranto\u00edna, um anti-s\u00e9ptico urin\u00e1rio comum, \u00e9 bactericida para muitas bact\u00e9rias gram-positivas e gram-negativas atrav\u00e9s da r\u00e1pida convers\u00e3o intracelular em intermedi\u00e1rios altamente reativos pelas redutases bacterianas.<sup>4<\/sup> Esses intermedi\u00e1rios reagem de forma inespec\u00edfica com prote\u00ednas riboss\u00f4micas e interrompem a s\u00edntese de prote\u00ednas, RNA, DNA e processos metab\u00f3licos.<sup>4<\/sup> Outros agentes, como a metenamina, atuam liberando formalde\u00eddo em urina \u00e1cida, que possui propriedades antibacterianas.<sup>5<\/sup><\/p>\n \n <p>A utilidade dos antiss\u00e9pticos urin\u00e1rios \u00e9 limitada principalmente a infec\u00e7\u00f5es do trato urin\u00e1rio inferior, embora alguns agentes como a nitrofuranto\u00edna tamb\u00e9m possam ser eficazes contra infec\u00e7\u00f5es do trato superior.<sup>1,6<\/sup> A supress\u00e3o prolongada da bacteri\u00faria com antiss\u00e9pticos urin\u00e1rios pode ser desej\u00e1vel em infec\u00e7\u00f5es cr\u00f4nicas ou recorrentes do trato urin\u00e1rio nas quais a erradica\u00e7\u00e3o da infec\u00e7\u00e3o por terapia sist\u00eamica de curto prazo n\u00e3o foi poss\u00edvel.<sup>1<\/sup><\/p>\n<p>Os antiss\u00e9pticos urin\u00e1rios s\u00e3o subst\u00e2ncias com a\u00e7\u00e3o antimicrobiana concentrada no trato urin\u00e1rio, utilizados para preven\u00e7\u00e3o e tratamento de infec\u00e7\u00f5es urin\u00e1rias. Incluem medicamentos como metenamina (hexamina), nitrofuranto\u00edna e \u00e1cido nalid\u00edxico. Diferem dos antibi\u00f3ticos sist\u00eamicos por terem a\u00e7\u00e3o predominantemente local no trato urin\u00e1rio.<\/p>","gt-synonyms":"Agentes antiinfecciosos do trato urin\u00e1rio, antibacterianos urin\u00e1rios, antimicrobianos do trato urin\u00e1rio, desinfetantes do trato urin\u00e1rio, agentes quimioter\u00e1picos urin\u00e1rios, agentes profil\u00e1ticos de ITU","gt-citation":"[1] Mayrer AR, Andriole VT. Urinary tract antiseptics. Med Clin North Am. 1982 Jan;66(1):199-208. DOI: 10.1016\/s0025-7125(16)31453-5\n\n[2] Kalpana Gupta, Barbara W. Trautner. Urinary Tract Infections, Pyelonephritis, and Prostatitis. In: Harrison's Principles of Internal Medicine, 20e. McGraw Hill; 2018. DOI: 10.1036\/1097-8542.722800\n\n[3] Milo G, Katchman EA, Paul M, Christiaens T, Baerheim A, Leibovici L. Duration of antibacterial treatment for uncomplicated urinary tract infection in women. Cochrane Database Syst Rev. 2005;(2):CD004682. DOI: 10.1002\/14651858.CD004682.pub2\n\n[4] Katzung BG, Trevor AJ. Basic & Clinical Pharmacology, 14e. McGraw Hill; 2018. Chapter 46: Urinary Antiseptics. DOI: 10.1036\/1259641155\n\n[5] Guay DR. An update on the role of nitrofurans in the management of urinary tract infections. Drugs. 2001;61(3):353-64. DOI: 10.2165\/00003495-200161030-00004\n\n[6] Huttner A, Verhaegh EM, Harbarth S, Muller AE, Theuretzbacher U, Mouton JW. Nitrofurantoin revisited: a systematic review and meta-analysis of controlled trials. J Antimicrob Chemother. 2015;70(9):2456-64. DOI: 10.1093\/jac\/dkv147","gt-clinical-context":"<p>Os antiss\u00e9pticos urin\u00e1rios s\u00e3o usados principalmente no tratamento de infec\u00e7\u00f5es n\u00e3o complicadas do trato urin\u00e1rio inferior, particularmente cistite aguda.<sup>1<\/sup> Eles tamb\u00e9m s\u00e3o valiosos para profilaxia e supress\u00e3o de infec\u00e7\u00f5es recorrentes do trato urin\u00e1rio quando a terapia sist\u00eamica de curto prazo n\u00e3o foi eficaz.<sup>1,6<\/sup><\/p>\n \n <p>A sele\u00e7\u00e3o de pacientes para terapia antiss\u00e9ptica urin\u00e1ria normalmente inclui indiv\u00edduos com:<\/p>\n <ul>\n <li>Bacteri\u00faria vesical sintom\u00e1tica aguda e n\u00e3o complicada<sup>1<\/sup><\/li>\n <li>Infec\u00e7\u00f5es recorrentes do trato urin\u00e1rio que requerem profilaxia<sup>2<\/sup><\/li>\n <li>Infec\u00e7\u00f5es cr\u00f4nicas do trato urin\u00e1rio onde a erradica\u00e7\u00e3o por terapia de curto prazo falhou<sup>1<\/sup><\/li>\n <li>Pacientes que n\u00e3o toleram antibi\u00f3ticos sist\u00eamicos<sup>3<\/sup><\/li><\/ul>\n \n <p>Agentes espec\u00edficos t\u00eam aplica\u00e7\u00f5es cl\u00ednicas espec\u00edficas. A nitrofuranto\u00edna \u00e9 vers\u00e1til e eficaz contra infec\u00e7\u00f5es do trato superior, bacteri\u00faria recorrente e serve como agente supressor de longo prazo em crian\u00e7as e pacientes gr\u00e1vidas, com apenas uma baixa incid\u00eancia de desenvolvimento de resist\u00eancia.<sup>1<\/sup> \u00c9 bactericida para muitas bact\u00e9rias gram-positivas e gram-negativas, embora Pseudomonas aeruginosa e muitas cepas de Proteus sejam inerentemente resistentes.<sup>4<\/sup><\/p>\n \n <p>A metenamina, quando usada com a compreens\u00e3o adequada de seu comportamento farmacocin\u00e9tico, \u00e9 eficaz em mulheres com bacteri\u00faria recorrente n\u00e3o complicada, incluindo aquelas com pat\u00f3genos multirresistentes, e como agente profil\u00e1tico em homens com infec\u00e7\u00e3o recorrente.<sup>1,5<\/sup> Para efic\u00e1cia ideal, a metenamina requer urina \u00e1cida (pH abaixo de 5,5) para liberar formalde\u00eddo, que fornece o antibacteriano efeito.<sup>5<\/sup><\/p>\n \n <p>A dosagem t\u00edpica de nitrofuranto\u00edna em adultos \u00e9 de 100 mg por via oral quatro vezes ao dia para infec\u00e7\u00f5es agudas, ou uma dose \u00fanica di\u00e1ria de 100 mg para profilaxia.<sup>4<\/sup> Para mandelato de metenamina, a dosagem padr\u00e3o \u00e9 1 g quatro vezes ao dia, ou para hipurato de metenamina, 1 g duas vezes ao dia.<sup>5<\/sup><\/p>\n \n <p>As taxas de sucesso dos antiss\u00e9pticos urin\u00e1rios no tratamento de ITUs n\u00e3o complicadas variam de 70 a 95%, dependendo do agente espec\u00edfico e dos fatores do paciente.<sup>3,6<\/sup> No entanto, sua efic\u00e1cia \u00e9 geralmente limitada a infec\u00e7\u00f5es do trato urin\u00e1rio inferior e n\u00e3o s\u00e3o recomendados para pielonefrite ou ITUs complicadas com sintomas sist\u00eamicos.<sup>2<\/sup><\/p>\n<p>Na pr\u00e1tica cl\u00ednica, a metenamina \u00e9 utilizada como profilaxia de infec\u00e7\u00f5es urin\u00e1rias recorrentes, sendo uma alternativa aos antibi\u00f3ticos de baixa dose conforme recomenda\u00e7\u00f5es da EAU. A nitrofuranto\u00edna permanece como op\u00e7\u00e3o de primeira linha para cistite n\u00e3o complicada. O uso profil\u00e1tico \u00e9 especialmente relevante antes de procedimentos urol\u00f3gicos como cistoscopia e estudos urodin\u00e2micos.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":126},"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>Antiss\u00e9pticos Urin\u00e1rios: Profilaxia e Tratamento | Rigicon<\/title>\n<meta name=\"description\" content=\"Conhe\u00e7a os antiss\u00e9pticos urin\u00e1rios para preven\u00e7\u00e3o e tratamento de infec\u00e7\u00f5es do trato urin\u00e1rio. 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