{"id":12683,"date":"2025-07-10T09:18:02","date_gmt":"2025-07-10T13:18:02","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/bladder-outlet-obstruction\/"},"modified":"2026-10-06T15:38:20","modified_gmt":"2026-10-06T19:38:20","slug":"obstrucao-infravesical","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/obstrucao-infravesical\/","title":{"rendered":"Obstru\u00e7\u00e3o Infravesical"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[111],"glossary-product":[108,107],"class_list":["post-12683","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-urological-disorders","glossary-product-conticlassic-aus","glossary-product-contireflex-enhanced-aus"],"acf":{"gt-definition":"<p>A obstru\u00e7\u00e3o infravesical (OIV) \u00e9 um bloqueio na base da bexiga que reduz ou interrompe o fluxo de urina para a uretra, o canal que conduz a urina para fora do corpo.<sup>1<\/sup> Essa condi\u00e7\u00e3o resulta de uma variedade de etiologias, que podem ser de natureza funcional ou anat\u00f4mica. A OIV produz compress\u00e3o ou resist\u00eancia sobre o canal de sa\u00edda vesical em qualquer ponto entre o colo vesical e o meato uretral.<sup>2<\/sup> A obstru\u00e7\u00e3o resultante frequentemente produz sintomas do trato urin\u00e1rio inferior (STUI), embora o grau de inc\u00f4modo causado por esses sintomas seja altamente vari\u00e1vel e n\u00e3o previs\u00edvel com base na etiologia desencadeante espec\u00edfica.<sup>2<\/sup> A OIV tamb\u00e9m pode ocorrer na completa aus\u00eancia de sintomas e ser identificada pela primeira vez no contexto de reten\u00e7\u00e3o urin\u00e1ria ou descompensa\u00e7\u00e3o do trato urin\u00e1rio superior.<sup>2<\/sup><\/p>","gt-synonyms":"BOO, Obstru\u00e7\u00e3o do trato urin\u00e1rio inferior (LUTO), Obstru\u00e7\u00e3o do colo da bexiga, Obstru\u00e7\u00e3o prost\u00e1tica, Obstru\u00e7\u00e3o uretral, Uropatia obstrutiva, Reten\u00e7\u00e3o urin\u00e1ria - BOO","gt-citation":"[1] Andersson KE, Wein AJ. Pharmacologic management of lower urinary tract storage and emptying failure. In: Partin AW, Dmochowski RR, Kavoussi LR, Peters CA, eds. Campbell-Walsh-Wein Urology. 12th ed. Philadelphia, PA: Elsevier; 2021:chap 120.\r\n\r\n[2] Dmochowski RR. Bladder Outlet Obstruction: Etiology and Evaluation. Rev Urol. 2005;7(Suppl 6):S3-S13. PMID: 16986027\r\n\r\n[3] Kaufman MR, Scarpero H, Dmochowski RR. Diagnosis and management of outlet obstruction in the female. Curr Opin Urol. 2008 Jul;18(4):365-9. DOI: 10.1097\/MOU.0b013e3283036cd5","gt-clinical-context":"<p>A obstru\u00e7\u00e3o infravesical \u00e9 uma considera\u00e7\u00e3o importante na avalia\u00e7\u00e3o e no manejo de pacientes que apresentam sintomas do trato urin\u00e1rio inferior (STUI).<sup>2<\/sup> Esses sintomas podem ser predominantemente obstrutivos, irritativos ou, com frequ\u00eancia, uma combina\u00e7\u00e3o de ambos. Tipicamente, os sintomas obstrutivos incluem hesita\u00e7\u00e3o, sensa\u00e7\u00e3o de esvaziamento vesical incompleto, jato urin\u00e1rio diminu\u00eddo e gotejamento urin\u00e1rio p\u00f3s-miccional. As queixas irritativas incluem urg\u00eancia urin\u00e1ria, aumento da frequ\u00eancia urin\u00e1ria, dis\u00faria ocasional e noct\u00faria.<sup>2<\/sup><\/p>\r\n<p>Em homens, a obstru\u00e7\u00e3o infravesical \u00e9 mais comumente causada pela hiperplasia prost\u00e1tica benigna (HPB), especialmente em popula\u00e7\u00f5es mais idosas.<sup>1<\/sup> Outras causas incluem estenoses uretrais, contraturas do colo vesical e c\u00e2ncer de pr\u00f3stata. Em mulheres, a obstru\u00e7\u00e3o infravesical \u00e9 menos comum, mas pode resultar de procedimentos anti-incontin\u00eancia, prolapso de \u00f3rg\u00e3os p\u00e9lvicos ou obstru\u00e7\u00e3o prim\u00e1ria do colo vesical.<sup>3<\/sup><\/p>\r\n<p>O diagn\u00f3stico normalmente envolve uma combina\u00e7\u00e3o de avalia\u00e7\u00e3o cl\u00ednica, urofluxometria, medi\u00e7\u00e3o do res\u00edduo p\u00f3s-miccional e, em alguns casos, estudos urodin\u00e2micos, considerados o padr\u00e3o-ouro para quantificar o grau de obstru\u00e7\u00e3o.<sup>2<\/sup> A cistoscopia tamb\u00e9m pode ser utilizada para visualizar a uretra e o colo vesical.<\/p>\r\n<p>O tratamento depende da causa subjacente. Para a obstru\u00e7\u00e3o relacionada \u00e0 HPB, as op\u00e7\u00f5es incluem medicamentos (alfabloqueadores, inibidores da 5-alfa-redutase), procedimentos minimamente invasivos ou interven\u00e7\u00f5es cir\u00fargicas, como a ressec\u00e7\u00e3o transuretral da pr\u00f3stata (RTUP).<sup>1<\/sup> Na obstru\u00e7\u00e3o aguda, o cateterismo \u00e9 frequentemente necess\u00e1rio para aliviar o bloqueio.<sup>2<\/sup> A obstru\u00e7\u00e3o infravesical n\u00e3o tratada a longo prazo pode levar \u00e0 descompensa\u00e7\u00e3o vesical, infec\u00e7\u00f5es urin\u00e1rias recorrentes e les\u00e3o renal.<sup>2<\/sup><\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":232},"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>Obstru\u00e7\u00e3o Infravesical: Causas e Diagn\u00f3stico | Rigicon<\/title>\n<meta name=\"description\" content=\"Entenda a obstru\u00e7\u00e3o infravesical, bloqueio ao fluxo urin\u00e1rio abaixo da bexiga. 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