{"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":"2025-07-10T09:18:02","modified_gmt":"2025-07-10T13:18:02","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 da sa\u00edda da bexiga (BOO) \u00e9 um bloqueio na base da bexiga que reduz ou interrompe o fluxo de urina para a uretra, o tubo que transporta a urina para fora do corpo.<sup>1<\/sup> Esta condi\u00e7\u00e3o resulta de uma variedade de etiologias, que podem ser de natureza funcional ou anat\u00f4mica. O BOO produz compress\u00e3o ou resist\u00eancia no canal de sa\u00edda da bexiga em qualquer local, desde o colo da bexiga at\u00e9 o meato uretral.<sup>2<\/sup> A obstru\u00e7\u00e3o resultante freq\u00fcentemente produz sintomas do trato urin\u00e1rio inferior (STUI), embora o grau de inc\u00f4modo por esses sintomas seja altamente vari\u00e1vel e n\u00e3o previs\u00edvel com base na etiologia espec\u00edfica desencadeante.<sup>2<\/sup> O BOO tamb\u00e9m pode ocorrer na completa aus\u00eancia de sintomas e ser identificado pela primeira vez no cen\u00e1rio de reten\u00e7\u00e3o urin\u00e1ria ou descompensa\u00e7\u00e3o de o trato urin\u00e1rio superior.<sup>2<\/sup><\/p>\n<p>A obstru\u00e7\u00e3o infravesical (OIV) \u00e9 o impedimento ao fluxo urin\u00e1rio que ocorre entre o colo vesical e o meato uretral externo. As causas mais comuns em homens s\u00e3o hiperplasia prost\u00e1tica benigna (HPB), estenose uretral e contratura do colo vesical. Diagn\u00f3stico definitivo requer estudo press\u00e3o-fluxo demonstrando alta press\u00e3o detrusora com baixo fluxo urin\u00e1rio.<\/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. DOI: 10.1016\/B978-1-4557-7567-5.00120-1\n\n[2] Dmochowski RR. Bladder Outlet Obstruction: Etiology and Evaluation. Rev Urol. 2005;7(Suppl 6):S3-S13. PMID: 16986027\n\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 da sa\u00edda da bexiga \u00e9 usada clinicamente na avalia\u00e7\u00e3o e tratamento de pacientes que apresentam sintomas do trato urin\u00e1rio inferior (STUI).<sup>2<\/sup> Esses sintomas podem ser predominantemente obstrutivos, irritativos ou frequentemente uma combina\u00e7\u00e3o de ambos. Normalmente, os sintomas obstrutivos incluem hesita\u00e7\u00e3o, sensa\u00e7\u00e3o de esvaziamento incompleto da bexiga, diminui\u00e7\u00e3o do jato urin\u00e1rio e gotejamento urin\u00e1rio p\u00f3s-miccional. As queixas irritativas incluem urg\u00eancia urin\u00e1ria, frequ\u00eancia de mic\u00e7\u00e3o, dis\u00faria ocasional e noct\u00faria.<sup>2<\/sup><\/p>\n<p>Nos homens, a BOO \u00e9 mais comumente causada por hiperplasia prost\u00e1tica benigna (HPB), especialmente em popula\u00e7\u00f5es idosas.<sup>1<\/sup> Outras causas incluem estenoses uretrais, contraturas do colo da bexiga e c\u00e2ncer de pr\u00f3stata. Nas mulheres, a BOO \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>\n<p>O diagn\u00f3stico normalmente envolve uma combina\u00e7\u00e3o de avalia\u00e7\u00e3o cl\u00ednica, urofluxometria, medi\u00e7\u00e3o residual p\u00f3s-miccional e, em alguns casos, estudos urodin\u00e2micos que s\u00e3o considerados o padr\u00e3o ouro para quantificar o grau de obstru\u00e7\u00e3o.<sup>2<\/sup> A cistoscopia tamb\u00e9m pode ser usada para visualizar a uretra e o colo da bexiga.<\/p>\n<p>O tratamento depende da causa subjacente. Para obstru\u00e7\u00e3o relacionada \u00e0 HPB, as op\u00e7\u00f5es incluem medicamentos (alfa-bloqueadores, inibidores da 5-alfa redutase), procedimentos minimamente invasivos ou interven\u00e7\u00f5es cir\u00fargicas como ressec\u00e7\u00e3o transuretral da pr\u00f3stata (RTU).<sup>1<\/sup> Para obstru\u00e7\u00e3o aguda, o cateterismo \u00e9 frequentemente necess\u00e1rio para aliviar o bloqueio.<sup>2<\/sup> BOO n\u00e3o tratada a longo prazo pode levar \u00e0 descompensa\u00e7\u00e3o da bexiga, infec\u00e7\u00f5es recorrentes do trato urin\u00e1rio e problemas renais danos.<sup>2<\/sup><\/p>\n<p>A EAU define obstru\u00e7\u00e3o urodinamicamente pelo nomograma de Abrams-Griffiths ou \u00edndice de obstru\u00e7\u00e3o infravesical > 40. Sintomas incluem jato fraco, hesita\u00e7\u00e3o, intermit\u00eancia e esfor\u00e7o miccional. Tratamento depende da causa: alfa-bloqueadores e\/ou inibidores da 5-alfa-redutase para HPB, uretrotomia ou uretroplastia para estenose, e incis\u00e3o endosc\u00f3pica para contratura do colo vesical.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":148},"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>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. Causas prost\u00e1ticas e uretrais, diagn\u00f3stico urodin\u00e2mico e tratamento. 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