{"id":5973,"date":"2022-04-06T10:00:02","date_gmt":"2022-04-06T08:00:02","guid":{"rendered":"https:\/\/www.asssa.es\/ca\/?p=5973"},"modified":"2022-06-30T12:51:45","modified_gmt":"2022-06-30T10:51:45","slug":"5973-2","status":"publish","type":"post","link":"https:\/\/www.asssa.es\/ca\/5973-2\/","title":{"rendered":"Hipotensi\u00f3 Ortost\u00e0tica.  Et mareges en posar-te dempeus?"},"content":{"rendered":"<p>La <strong>hipotensi\u00f3 ortost\u00e0tica<\/strong> consisteix en una baixada brusca de la tensi\u00f3 arterial en canviar de postura, d\u2019estar ficat al llit o assegut un temps, a posar-se dempeus de manera r\u00e0pida i imprevista.<!--more--><\/p>\n<p>Amb el pas del dec\u00fabit a la bipedestaci\u00f3 es produeix un despla\u00e7ament de sang, de manera que 500-700 ml de sang queden retinguts en les extremitats inferiors i en l\u2019\u00e0rea espl\u00e8nica (melsa), fet que determina una reducci\u00f3 del retorn ven\u00f3s i del rendiment card\u00edac.<\/p>\n<p>Quan fallen els mecanismes per a mantenir la pressi\u00f3 arterial, es produeix el quadre d\u2019hipotensi\u00f3 ortost\u00e0tica, que pot arribar a provocar una s\u00edncope quan el pacient s\u2019incorpora.<\/p>\n<p>La <strong>s\u00edncope<\/strong> es defineix com una <strong>p\u00e8rdua de consci\u00e8ncia i del to postural d\u2019aparici\u00f3 brusca i durada curta que es resolen espont\u00e0niament sense seq\u00fceles neurol\u00f2giques.<\/strong> Es per causa d\u2019una caiguda brusca del flux -reg- cerebral que produeix un d\u00e8ficit transitori del metabolisme cerebral. \u00c9s un quadre cl\u00ednic com\u00fa. Al voltant del 20% de la poblaci\u00f3 adulta ha sofert en algun moment de la seva vida un quadre sincopal.<\/p>\n<p>Parlar\u00edem de <strong>pres\u00edncope<\/strong> quan descrivim episodis bruscos de <strong>enterboliment de consci\u00e8ncia i inestabilitat<\/strong>, dels quals el pacient es recupera r\u00e0pidament sense arribar a la p\u00e8rdua completa de consci\u00e8ncia. Es considera una forma frustrada de la s\u00edncope.<\/p>\n<p>Es considera <strong>hipotensi\u00f3 ortost\u00e0tica<\/strong> quan hi ha una <strong>reducci\u00f3 de 20-15 mm Hg entre la presa de TA sist\u00f2lica en dec\u00fabit i als 2 minuts de passar a bipedestaci\u00f3.<\/strong> En les persones ancianes aquest fet sol ser freq\u00fcent.<\/p>\n<p>Les causes s\u00f3n m\u00faltiples i abasten des d\u2019alteracions funcionals fins a processos neurol\u00f2gics greus que afecten l\u2019arc reflex baroreceptor.<\/p>\n<p>Les <strong>causes m\u00e9s comunes<\/strong> s\u00f3n:<\/p>\n<ul>\n<li>La reducci\u00f3 del volum intravascular (hemorr\u00e0gia, deshidrataci\u00f3).<\/li>\n<li>Els efectes adversos de determinats f\u00e0rmacs (di\u00fcr\u00e8tics, hipotensores, vasodilatadors, betabloquejants\u2026).<\/li>\n<\/ul>\n<p>Les persones ancianes s\u00f3n particularment sensibles a causa de la menor sensibilitat baroreceptora, el menor flux cerebral i l\u2019arterioesclerosi.<\/p>\n<h6><strong><u><a href=\"https:\/\/www.asssa.es\/ca\/assegurances-salut\/\">ASSSA Assegurances de Salut<\/a><\/u><\/strong><\/h6>\n<h6><em>La informaci\u00f3 publicada en aquest mitj\u00e0 no substitueix ni complementa cap manera l\u2019atenci\u00f3 directa d\u2019un metge, ni el seu diagn\u00f2stic, ni el tractament que prescrigui; tampoc s\u2019ha d\u2019utilitzar per a l\u2019autodiagn\u00f2stic.<\/em><\/h6>\n<h6><em>L\u2019\u00fas que faci el lector d\u2019aquest servei es realitza sota la seva exclusiva responsabilitat.<\/em><\/h6>\n<h6><em>ASSSA recomana que per a qualsevol q\u00fcesti\u00f3 relacionada amb la seva salut consulti sempre amb un metge.<\/em><\/h6>\n","protected":false},"excerpt":{"rendered":"<p>La hipotensi\u00f3 ortost\u00e0tica consisteix en una baixada brusca de la tensi\u00f3 arterial en canviar de postura, d\u2019estar ficat al llit o assegut un temps, a posar-se dempeus de manera r\u00e0pida i imprevista.<\/p>\n","protected":false},"author":16,"featured_media":5974,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[32],"tags":[],"class_list":["post-5973","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-consells-de-salut"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hipotensi\u00f3 Ortost\u00e0tica. 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