{"id":211543,"date":"2020-11-02T05:54:03","date_gmt":"2020-11-02T08:54:03","guid":{"rendered":"https:\/\/www.somospopular.com.br\/consultorios-e-clinicas\/dicio\/aneurisma-da-aorta-abdominal-o-que-e-2\/"},"modified":"2020-11-02T05:54:03","modified_gmt":"2020-11-02T08:54:03","slug":"aneurisma-da-aorta-abdominal-o-que-e-2","status":"publish","type":"dicio","link":"https:\/\/www.somospopular.com.br\/consultorios-e-clinicas\/dicio\/aneurisma-da-aorta-abdominal-o-que-e-2\/","title":{"rendered":"Aneurisma da aorta abdominal – O que \u00e9"},"content":{"rendered":"

O termo aneurisma prov\u00e9m do grego e significa dilata\u00e7\u00e3o\u00a0e aplica-se sempre que h\u00e1 um aumento irrevers\u00edvel do di\u00e2metro normal das art\u00e9rias. Caracteriza-se por tumefa\u00e7\u00e3o mais ou menos volumosa, puls\u00e1til e com expans\u00e3o, isto \u00e9, com uma varia\u00e7\u00e3o de di\u00e2metro s\u00edncrona com a pulsa\u00e7\u00e3o arterial.<\/p>\n

O aneurisma da aorta abdominal (AAA) infrarrenal \u00e9 uma doen\u00e7a relativamente frequente, denominando-se como tal sempre que a dilata\u00e7\u00e3o for superior a tr\u00eas cent\u00edmetros.<\/p>\n

Resulta de uma fraqueza estrutural da parede arterial, nomeadamente da t\u00fanica m\u00e9dia, sendo a sua causa mais frequente a aterosclerose. Nestas situa\u00e7\u00f5es tem em regra uma distribui\u00e7\u00e3o focal, com localiza\u00e7\u00f5es preferenciais na aorta abdominal infrarrenal e nas art\u00e9rias popl\u00edtea e subcl\u00e1via.<\/p>\n

\u00c9 mais frequente a partir dos 65 anos, mais comum no sexo masculino e a sua preval\u00eancia \u00e9 maior em pacientes com doen\u00e7a coron\u00e1ria ou arterial oclusiva perif\u00e9rica e em portadores de aneurismas perif\u00e9ricos.<\/p>\n

Se a preval\u00eancia na popula\u00e7\u00e3o portuguesa for semelhante \u00e0 de outros pa\u00edses europeus, poder-se-\u00e1 admitir que pode haver cerca de 500 novos casos por ano, com tend\u00eancia a aumentar, consequ\u00eancia do progressivo envelhecimento da popula\u00e7\u00e3o.<\/p>\n

A sua import\u00e2ncia cl\u00ednica deriva essencialmente da irreversibilidade da dilata\u00e7\u00e3o arterial e do seu car\u00e1cter progressivo, a qual pode conduzir \u00e0 rutura, situa\u00e7\u00e3o fatal se n\u00e3o tratada cirurgicamente, e associada a elevada mortalidade – 80% nas melhores s\u00e9ries publicadas, o que contrasta com um risco cir\u00fargico m\u00ednimo (menor que 4%) – quando \u00e9 tratado de forma programada.<\/p>\n","protected":false},"template":"","class_list":["post-211543","dicio","type-dicio","status-publish","hentry"],"yoast_head":"\nAneurisma da aorta abdominal - O que \u00e9 - Consult\u00f3rios e Cl\u00ednicas<\/title>\n<meta name=\"description\" content=\"Aneurisma da aorta abdominal - O que \u00e9 . D\u00favidas frequentes Sa\u00fade para Todos. 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