{"id":12822,"date":"2025-08-05T09:52:48","date_gmt":"2025-08-05T13:52:48","guid":{"rendered":"https:\/\/www.rigicon.com\/glossary-term\/renal-artery-stenosis\/"},"modified":"2025-08-05T09:52:48","modified_gmt":"2025-08-05T13:52:48","slug":"estenose-da-arteria-renal","status":"publish","type":"glossary-term","link":"https:\/\/www.rigicon.com\/pt-br\/glossary-term\/estenose-da-arteria-renal\/","title":{"rendered":"Estenose da Art\u00e9ria Renal"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","glossary-category":[134],"glossary-product":[],"class_list":["post-12822","glossary-term","type-glossary-term","status-publish","hentry","glossary-category-vascular-diseases"],"acf":{"gt-definition":"<p>A estenose da art\u00e9ria renal (EAR) \u00e9 uma condi\u00e7\u00e3o vascular caracterizada pelo estreitamento de uma ou ambas as art\u00e9rias renais, levando \u00e0 redu\u00e7\u00e3o do fluxo sangu\u00edneo para os rins.<sup>1<\/sup> Esse estreitamento pode resultar de duas etiologias prim\u00e1rias: aterosclerose, respons\u00e1vel por aproximadamente 90% dos casos, ou displasia fibromuscular (DMF), que compreende cerca de 10% dos diagn\u00f3sticos.<sup>2<\/sup> Aterosclerose A EAR normalmente afeta o ter\u00e7o proximal da art\u00e9ria renal, incluindo a aorta perirrenal e o \u00f3stio, enquanto a FMD geralmente envolve os dois ter\u00e7os distais da art\u00e9ria renal.<sup>3<\/sup> A perfus\u00e3o renal reduzida ativa o sistema renina-angiotensina-aldosterona (SRAA), que pode levar \u00e0 hipertens\u00e3o renovascular, nefropatia isqu\u00eamica e, em casos graves, doen\u00e7a renal cr\u00f4nica.<sup>4<\/sup> A EAR \u00e9 considerada uma das principais causas de hipertens\u00e3o secund\u00e1ria, afetando aproximadamente 1% a 10% dos 50 milh\u00f5es de pessoas com hipertens\u00e3o nos Estados Unidos.<sup>5<\/sup><\/p>\n<p>A estenose da art\u00e9ria renal \u00e9 o estreitamento de uma ou ambas as art\u00e9rias renais, causando redu\u00e7\u00e3o do fluxo sangu\u00edneo renal. A causa mais comum \u00e9 aterosclerose (90%, geralmente em pacientes > 50 anos), seguida por displasia fibromuscular (10%, mais comum em mulheres jovens). Pode causar hipertens\u00e3o renovascular (5-10% dos casos de hipertens\u00e3o) e nefropatia isqu\u00eamica com deteriora\u00e7\u00e3o progressiva da fun\u00e7\u00e3o renal.<\/p>","gt-synonyms":"Doen\u00e7a renovascular, Doen\u00e7a vascular renal, Estenose ateroscler\u00f3tica da art\u00e9ria renal (ARAS), Hipertens\u00e3o renovascular (quando causa hipertens\u00e3o), Nefropatia isqu\u00eamica (quando causa dano renal), Doen\u00e7a oclusiva da art\u00e9ria renal","gt-citation":"[1] Silva J, Tonheiro J, Rodrigues F. The \"Silent Enemy\" Called Renal Artery Stenosis: A Mini-Review. J Vasc Dis. 2025;4(1):10. DOI: https:\/\/doi.org\/10.3390\/jvd4010010\n\n[2] Dobrek L. An Outline of Renal Artery Stenosis Pathophysiology\u2014A Narrative Review. Life. 2021;11(3):208. DOI: https:\/\/doi.org\/10.3390\/life11030208\n\n[3] Weber BR, Dieter RS. Renal artery stenosis: epidemiology and treatment. Int J Nephrol Renovasc Dis. 2014;7:169-181. DOI: https:\/\/doi.org\/10.2147\/IJNRD.S40175\n\n[4] Bokhari MR, Bokhari SRA. Renal Artery Stenosis. StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023. PMID: 28613718\n\n[5] Sarafidis PA, Persu A, De Leeuw PW, et al. Atherosclerotic renovascular disease: a clinical practice update. Nephrol Dial Transplant. 2023;38(12):2835-2850. DOI: https:\/\/doi.org\/10.1093\/ndt\/gfad171","gt-clinical-context":"<p>A estenose da art\u00e9ria renal \u00e9 clinicamente significativa em v\u00e1rios contextos, principalmente como causa de hipertens\u00e3o secund\u00e1ria e disfun\u00e7\u00e3o renal progressiva.<sup>1<\/sup> A apresenta\u00e7\u00e3o cl\u00ednica varia dependendo da gravidade, progress\u00e3o e se a estenose \u00e9 unilateral ou bilateral.<\/p>\n\n<h3>Crit\u00e9rios de sele\u00e7\u00e3o de pacientes:<\/h3>\n<p>Os pacientes que devem ser avaliados para EAR incluem aqueles com:<\/p>\n<ul>\n <li>In\u00edcio repentino ou agravamento da hipertens\u00e3o, especialmente ap\u00f3s os 55 anos<sup>2<\/sup><\/li>\n <li>Hipertens\u00e3o resistente (que requer tr\u00eas ou mais medicamentos)<sup>3<\/sup><\/li>\n <li>Epis\u00f3dios recorrentes de edema pulmonar s\u00fabito ou insufici\u00eancia card\u00edaca congestiva inexplic\u00e1vel<sup>4<\/sup><\/li>\n <li>Insufici\u00eancia renal progressiva inexplicada<sup>5<\/sup><\/li>\n <li>Disparidade significativa nos tamanhos dos rins (>1,5 cm de diferen\u00e7a)<sup>2<\/sup><\/li>\n <li>Azotemia inexplic\u00e1vel ao iniciar inibidores da ECA ou bloqueadores dos receptores da angiotensina<sup>3<\/sup><\/li><\/ul>\n\n<h3>Procedimentos de diagn\u00f3stico:<\/h3>\n<p>O diagn\u00f3stico normalmente envolve uma combina\u00e7\u00e3o de suspeita cl\u00ednica e estudos de imagem:<\/p>\n<ul>\n <li>Ultrassonografia duplex Doppler: uma ferramenta de triagem inicial n\u00e3o invasiva com sensibilidade vari\u00e1vel (60-90%)<sup>4<\/sup><\/li>\n <li>Angio tomografia computadorizada (CTA): oferece excelentes detalhes anat\u00f4micos, mas requer contraste iodado<sup>5<\/sup><\/li>\n <li>Angiografia por resson\u00e2ncia magn\u00e9tica (ARM): fornece boa visualiza\u00e7\u00e3o sem contraste iodado, mas pode ser contraindicada em pacientes com insufici\u00eancia renal grave<sup>4<\/sup><\/li>\n <li>Arteriografia renal: o padr\u00e3o-ouro para diagn\u00f3stico, mas invasivo e apresenta riscos de nefropatia por contraste<sup>5<\/sup><\/li><\/ul>\n\n<h3>Abordagens de tratamento:<\/h3>\n<p>As estrat\u00e9gias de gerenciamento incluem:<\/p>\n<ul>\n <li>Terapia m\u00e9dica: medicamentos anti-hipertensivos (particularmente inibidores da ECA e BRA em doen\u00e7as unilaterais), estatinas, agentes antiplaquet\u00e1rios e modifica\u00e7\u00e3o de fatores de risco<sup>2,4<\/sup><\/li>\n <li>Revasculariza\u00e7\u00e3o: angioplastia renal transluminal percut\u00e2nea com implante de stent para pacientes selecionados com estenose grave e hemodinamicamente significativa, especialmente aqueles com edema pulmonar recorrente, disfun\u00e7\u00e3o renal progressiva ou hipertens\u00e3o resistente<sup>3,5<\/sup><\/li>\n <li>Revasculariza\u00e7\u00e3o cir\u00fargica: Reservada para casos complexos inadequados para abordagens endovascular<sup>4<\/sup><\/li><\/ul>\n\n<h3>Resultados esperados:<\/h3>\n<p>Os resultados variam com base na sele\u00e7\u00e3o do paciente e no momento da interven\u00e7\u00e3o:<\/p>\n<ul>\n <li>A melhora da press\u00e3o arterial ocorre em 60-80% dos pacientes adequadamente selecionados ap\u00f3s a revasculariza\u00e7\u00e3o<sup>2<\/sup><\/li>\n <li>A estabiliza\u00e7\u00e3o ou melhoria da fun\u00e7\u00e3o renal \u00e9 observada em aproximadamente 30-50% dos pacientes<sup>5<\/sup><\/li>\n <li>A redu\u00e7\u00e3o de eventos cardiovasculares e o benef\u00edcio de sobrevida permanecem controversos e dependem da sele\u00e7\u00e3o apropriada do paciente<sup>3,4<\/sup><\/li><\/ul>\n\n<p>O estudo Cardiovascular Outcomes in Renal Atherosclerotic Lesions (CORAL) demonstrou que a maioria dos pacientes com EAR ateroscler\u00f3tica pode ser tratada apenas com terapia m\u00e9dica ideal, com revasculariza\u00e7\u00e3o reservada para subgrupos espec\u00edficos de alto risco.<sup>3,5<\/sup><\/p>\n<p>O diagn\u00f3stico inclui eco-Doppler renal, angiotomografia ou angioresson\u00e2ncia. A EAU e diretrizes de hipertens\u00e3o recomendam tratamento cl\u00ednico otimizado (IECA, BRA, estatinas, antiplaquet\u00e1rios) como primeira linha para estenose ateroscler\u00f3tica. A revasculariza\u00e7\u00e3o endovascular (angioplastia com stent) \u00e9 reservada para casos refrat\u00e1rios ao tratamento cl\u00ednico ou com deteriora\u00e7\u00e3o r\u00e1pida da fun\u00e7\u00e3o renal. Na displasia fibromuscular, a angioplastia \u00e9 o tratamento de escolha.<\/p>","gt-related-evidence":null,"gt-featured":true,"gt-ai-referenced":false,"gt-view-count":84},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Estenose da Art\u00e9ria Renal: Hipertens\u00e3o Renovascular | Rigicon<\/title>\n<meta name=\"description\" content=\"Conhe\u00e7a a estenose da art\u00e9ria renal: causa de hipertens\u00e3o renovascular e insufici\u00eancia renal. 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