{"id":80637,"date":"2018-04-13T12:00:48","date_gmt":"2018-04-13T12:00:48","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/potasiul\/"},"modified":"2018-04-13T12:00:48","modified_gmt":"2018-04-13T12:00:48","slug":"potasiul","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/ro\/wiki\/potasiul\/","title":{"rendered":"Potasiul"},"content":{"rendered":"<h2 id=\"ce-este-potasiul\">Ce este potasiul?<\/h2>\n<p>Potasiul este un element chimic care, \u00een combina\u021bie cu alte minerale din organism, formeaz\u0103 s\u0103ruri alcaline importante \u00een procesele din organism \u0219i joac\u0103 un rol esen\u021bial \u00een men\u021binerea echilibrului acid \u0219i bazic \u00een corpul uman. Toate celulele corpului, \u00een special cele ale \u021besutului muscular, necesit\u0103 un con\u021binut ridicat de potasiu pentru a r\u0103m\u00e2ne s\u0103n\u0103toase. Un echilibru adecvat \u00eentre calciu, sodiu \u0219i potasiu \u00een plasma sanguin\u0103 este necesar pentru o func\u021bionare cardiac\u0103 corespunz\u0103toare. Potasiul este, de asemenea, electrolitul intracelular major, care joac\u0103 un rol important \u00een men\u021binerea volumului de fluid intracelular, a echilibrului osmotic \u0219i a conductivit\u0103\u021bii electrica a celulelor musculare. Celula homeostatic\u0103 este sus\u021binut\u0103 de un sistem activ (pompa de sodiu-potasiu), care transport\u0103 apoi sodiul \u0219i potasiul \u00een interiorul \u0219i exteriorul membranei.<\/p>\n<p>&nbsp;<\/p>\n<p>Potasiul contribuie la o serie de func\u021bii esen\u021biale ale corpului, incluz\u00e2nd urm\u0103toarele: tensiunea arterial\u0103, echilibrul normal al apei, contrac\u021biile musculare, impulsurile nervoase, digestia, ritmul cardiac \u0219i echilibrul pH-ului (aciditatea \u0219i alcalinitatea). Potasiul nu este produs \u00een mod natural de organism,<\/p>\n<p>prin urmare este important consumul echilibrat \u0219i corect al alimentelor \u0219i b\u0103uturilor bogate \u00een potasiu, pentru a se men\u021bine niveluri s\u0103n\u0103toase \u00een corp.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"de-ce-se-masoara-nivelul-de-potasiu\">De ce se m\u0103soar\u0103 nivelul de potasiu?<\/h2>\n<p>M\u0103surarea nivelului de potasiu \u00een corpul pacientului ne poate furniza informa\u021bii utile privind func\u021bia renal\u0103 \u0219i bolile legate de deficitul de potasiu. Deoarece majoritatea alimentelor con\u021bin o cantitate important\u0103 de potasiu, deficitul de potasiu sau hipopotasemia este pu\u021bin probabil s\u0103 fie cauzat\u0103 de o diet\u0103 dezechilibrat\u0103 a pacientului. Cauzele posibile includ sindromul Cushing (cuzat de o afec\u021biune a glandei suprarenale) \u0219i sindromul Fanconi (rezultatul unui defect congenital al rinichiului). Cauza ar putea fi, de asemenea, o doz\u0103 excesiv\u0103 de cortizon, v\u0103rs\u0103turi prelungite sau diaree, sau administrarea de diuretice tiazidice, folosite pentru tratamentul hipertensiunii arteriale. Semnele deficitului de potasiu pot include sl\u0103biciune \u0219i letargie, puls rapid, grea\u021b\u0103, diaree \u0219i senza\u021bii de furnic\u0103turi. Dac\u0103 organismul absoarbe suficient potasiu, dar elementul nu este distribuit \u00een mod corespunz\u0103tor, se pot dezvolta diverse afec\u021biuni. Astfel, un con\u021binut anormal de sc\u0103zut de potasiu \u00een s\u00e2nge poate duce la o paralizie intermitent\u0103 temporar\u0103 a mu\u0219chilor, cunoscut\u0103 sub numele de paralizie periodic\u0103 familial\u0103.<\/p>\n<p>&nbsp;<\/p>\n<p>Nivelul de potasiu din s\u00e2nge este \u00een mod normal de 3,6 p\u00e2n\u0103 la 5,2 milimoli pe litru (mmol\/l). Un nivel de potasiu \u00een s\u00e2nge mai mare de 7,0 mmol\/l poate fi periculos \u0219i necesit\u0103 tratament imediat. Un nivel foarte sc\u0103zut de potasiu (mai pu\u021bin de 2,5 mmol\/l) poate pune via\u021ba \u00een pericol \u0219i necesit\u0103 asisten\u021b\u0103 medical\u0103 de urgen\u021b\u0103.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"pregatirea-standard\">Preg\u0103tirea standard<\/h2>\n<p>&nbsp;<\/p>\n<p>Recoltarea se face, de obicei, diminea\u021ba \u00een spital. Medicul v\u0103 va sf\u0103tui \u0219i v\u0103 va recomanda dac\u0103 trebuie s\u0103 nu m\u00e2nca\u021bi \u00eenainte de analiza de s\u00e2nge. \u00cen acest caz, se recomand\u0103 ca pacientul s\u0103 nu m\u0103n\u00e2nce \u00eenainte de recoltare \u0219i s\u0103 vin\u0103 cu stomacul gol. Trebuie s\u0103 informa\u021bi medicul despre orice medicament pe care \u00eel lua\u021bi \u00eenainte de recoltare, deoarece unele tratamente medicale pot interfera cu rezultatele analizelor.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"analiza-este-dureroasa-sau-periculoasa\">Analiza este dureroas\u0103 sau periculoas\u0103?<\/h2>\n<p>Recoltarea nu este nici dureroas\u0103, nici periculoas\u0103. Pacientul poate sim\u021bi o senza\u021bie de furnic\u0103turi odat\u0103 cu intrarea acului \u00een bra\u021b, atunci c\u00e2nd s\u00e2ngele este extras pentru examinare.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"cum-se-efectueaza-analiza\">Cum se efectueaz\u0103 analiza?<\/h2>\n<p>&nbsp;<\/p>\n<p>Analiza const\u0103 dintr-un simplu test de s\u00e2nge.<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1779],"class_list":["post-80637","enciclopedia","type-enciclopedia","status-publish","hentry","enciclopedia_category-minerale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Potasiul - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Potasiul - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Ce este potasiul? 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