{"id":32362,"date":"2026-09-01T18:21:00","date_gmt":"2026-09-01T22:21:00","guid":{"rendered":"https:\/\/www.rigicon.com\/?post_type=glossary-term&p=32362"},"modified":"2026-09-02T06:06:00","modified_gmt":"2026-09-02T10:06:00","slug":"resistencia-ao-efluxo-vesical","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/resistencia-ao-efluxo-vesical\/","title":{"rendered":"Resist\u00eancia ao Efluxo Vesical"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[109],"glossary-product":[108,107],"class_list":["post-32362","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-diagnostic-phenomena","glossary-product-conticlassic-aus","glossary-product-contireflex-enhanced-aus"],"acf":{"gt-definition":"

A resist\u00eancia ao efluxo vesical refere-se \u00e0 resist\u00eancia fisiol\u00f3gica ou patol\u00f3gica que a bexiga deve superar para expelir a urina atrav\u00e9s do trato urin\u00e1rio. Essa resist\u00eancia ocorre no canal de sa\u00edda vesical, que se estende do colo vesical at\u00e9 o meato uretral.\u00b9 Durante a mic\u00e7\u00e3o normal, o m\u00fasculo detrusor se contrai para gerar press\u00e3o suficiente para vencer essa resist\u00eancia e permitir o fluxo urin\u00e1rio.\u00b2 A resist\u00eancia ao efluxo vesical pode ser quantificada por meio de estudos urodin\u00e2micos, especialmente o estudo fluxo-press\u00e3o, que mede a rela\u00e7\u00e3o entre a press\u00e3o detrusora e o fluxo urin\u00e1rio.\u00b3 A resist\u00eancia pode estar patologicamente aumentada em condi\u00e7\u00f5es como a hiperplasia prost\u00e1tica benigna ou a estenose uretral, ou terapeuticamente aumentada para tratar a incontin\u00eancia urin\u00e1ria de esfor\u00e7o.\u2074<\/p>\n","gt-synonyms":"Resist\u00eancia uretral, Resist\u00eancia da sa\u00edda vesical, Resist\u00eancia do efluxo uretral, Resist\u00eancia do trato de sa\u00edda, Resist\u00eancia vesicouretral","gt-citation":"[1] Dmochowski RR. Bladder Outlet Obstruction: Etiology and Evaluation. Rev Urol. 2005;7(Suppl 6):S3-S13. DOI: https:\/\/doi.org\/10.1016\/j.urology.2005.05.016\n\n[2] Nitti VW. Pressure Flow Urodynamic Studies: The Gold Standard for Diagnosing Bladder Outlet Obstruction. Rev Urol. 2005;7(Suppl 6):S14-S21. DOI: https:\/\/doi.org\/10.1016\/j.urology.2005.03.004\n\n[3] Kranse R, van Mastrigt R. Bladder outlet resistance. J Urol. 2003;169(3):1007-1010. DOI: https:\/\/doi.org\/10.1097\/01.ju.0000052693.58772.23\n\n[4] Schafer W. Analysis of bladder-outlet function with the linearized passive urethral resistance relation, linPURR, and a disease-specific approach for grading obstruction: from complex to simple. World J Urol. 1995;13(1):47-58. DOI: https:\/\/doi.org\/10.1007\/BF00182666\n\n[5] van Dort W, Rosier P, Bosch R. Quantifying bladder outflow obstruction in men: A systematic review and meta-analysis of pressure-flow criteria. Neurourol Urodyn. 2023;42(1):20-31. DOI: https:\/\/doi.org\/10.1002\/nau.25270","gt-clinical-context":"

A resist\u00eancia ao efluxo vesical \u00e9 um par\u00e2metro cr\u00edtico na avalia\u00e7\u00e3o urol\u00f3gica e no planejamento terap\u00eautico. Na pr\u00e1tica cl\u00ednica, a avalia\u00e7\u00e3o da resist\u00eancia ao efluxo vesical \u00e9 essencial para diagnosticar a obstru\u00e7\u00e3o do trato de sa\u00edda da bexiga (BOO) e determinar as interven\u00e7\u00f5es terap\u00eauticas adequadas.\u00b9<\/p>\n

A resist\u00eancia patologicamente aumentada pode resultar de causas anat\u00f4micas, como hiperplasia prost\u00e1tica benigna, c\u00e2ncer de pr\u00f3stata ou estenose uretral em homens, e prolapso de \u00f3rg\u00e3os p\u00e9lvicos ou complica\u00e7\u00f5es p\u00f3s-cir\u00fargicas em mulheres.\u00b2 Tamb\u00e9m pode decorrer de causas funcionais, incluindo dissinergia detrusor-esfincteriana, obstru\u00e7\u00e3o prim\u00e1ria do colo vesical ou mic\u00e7\u00e3o disfuncional.\u00b9 Pacientes com aumento da resist\u00eancia ao efluxo vesical geralmente apresentam sintomas do trato urin\u00e1rio inferior (LUTS), como hesita\u00e7\u00e3o, jato fraco, intermit\u00eancia e sensa\u00e7\u00e3o de esvaziamento incompleto.\u00b3<\/p>\n

Por outro lado, aumentar terapeuticamente a resist\u00eancia ao efluxo vesical \u00e9 um objetivo de tratamento para a incontin\u00eancia urin\u00e1ria de esfor\u00e7o, que pode resultar de defici\u00eancia esfincteriana intr\u00ednseca.\u2074 Isso pode ser alcan\u00e7ado por meio de interven\u00e7\u00f5es farmacol\u00f3gicas, como agonistas alfa-adren\u00e9rgicos, que contraem o esf\u00edncter uretral interno, ou interven\u00e7\u00f5es cir\u00fargicas, incluindo esf\u00edncteres urin\u00e1rios artificiais e procedimentos de sling.\u2075<\/p>\n

Os estudos urodin\u00e2micos, particularmente a an\u00e1lise de fluxo-press\u00e3o, continuam sendo o padr\u00e3o-ouro para quantificar a resist\u00eancia ao efluxo vesical. V\u00e1rios nomogramas e \u00edndices, como o \u00cdndice de Obstru\u00e7\u00e3o da Sa\u00edda Vesical (BOOI) e o nomograma da International Continence Society (ICS), s\u00e3o utilizados para classificar pacientes e orientar as decis\u00f5es terap\u00eauticas.\u00b3<\/p>\n","gt-related-evidence":null,"gt-featured":false,"gt-ai-referenced":true,"gt-view-count":2},"yoast_head":"\nResist\u00eancia ao Efluxo Vesical: Defini\u00e7\u00e3o e Medi\u00e7\u00e3o<\/title>\n<meta name=\"description\" content=\"A resist\u00eancia ao efluxo vesical \u00e9 a for\u00e7a oposta \u00e0 expuls\u00e3o da urina, medida por urodin\u00e2mica e essencial para diagnosticar dist\u00farbios urin\u00e1rios.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/resistencia-ao-efluxo-vesical\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta 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