{"id":4096,"date":"2012-12-20T23:23:16","date_gmt":"2012-12-20T21:23:16","guid":{"rendered":"https:\/\/kul.ro\/blog\/?p=4096"},"modified":"2012-12-20T23:29:52","modified_gmt":"2012-12-20T21:29:52","slug":"miocardul-neantrenat","status":"publish","type":"post","link":"https:\/\/kul.ro\/blog\/2012\/12\/miocardul-neantrenat\/","title":{"rendered":"Miocardul neantrenat"},"content":{"rendered":"<p>spus\u0103 mai bine ca aici n-am citit-o \u00een nicio revist\u0103:<\/p>\n<blockquote><p>&#8220;M\u0103rirea simultan\u0103 a for\u0163ei de contrac\u0163ie \u015fi a frecven\u0163ei realizeaz\u0103 cre\u015fterea debitului cardiac. Un miocard neantrenat sau afectat patologic are o posibilitate redus\u0103 de cre\u015ftere a for\u0163ei de contrac\u0163ie. De aceea, la suprasolicitare r\u0103spunde predominant prin tahicardie, realizat\u0103 prin interven\u0163ia predominant\u0103 a stimul\u0103rii sistemului nervos simpatic prin intermediul norardenalinei \u015fi adrenalinei, aspect ce rezult\u0103 prin determinarea concentra\u0163iei sanguine a acestor catecolamine la antrena\u0163i \u015fi neantrena\u0163i. Cre\u015fterea exclusiv\u0103 sau cu prec\u0103dere a frecven\u0163ei cardiace la neantrena\u0163i sau deficitari cardiaci constituie \u00eens\u0103 un mecanism deficitar de adaptare la efort pentru c\u0103 diastola se scurteaz\u0103, umplerea diastolic\u0103 este mai redus\u0103 \u015fi debitul sistolic scade. Frecven\u0163a maxim\u0103 la care tahicardia contribuie la cre\u015fterea debitului cardiac este \u00een jur de 170 (160-180) cili pe minut, peste care scade. <u>\u00cen jurul acestei valori aportul de oxigen este maxim<\/u>.&#8221;<\/p><\/blockquote>\n<p>Fiziologie umana &#8211; P. Groza, Ed. Medicala, 1980 edi\u0163ia a III-a.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>spus\u0103 mai bine ca aici n-am citit-o \u00een nicio revist\u0103: &#8220;M\u0103rirea simultan\u0103 a for\u0163ei de contrac\u0163ie \u015fi a frecven\u0163ei realizeaz\u0103 cre\u015fterea debitului cardiac. Un miocard neantrenat sau afectat patologic are o posibilitate redus\u0103 de cre\u015ftere a for\u0163ei de contrac\u0163ie. De aceea, la suprasolicitare r\u0103spunde predominant prin tahicardie, realizat\u0103 prin interven\u0163ia predominant\u0103 a stimul\u0103rii sistemului nervos [&hellip;]<\/p>\n<a role=\"link\" class=\"rtp-readmore\" title=\"Read more on Miocardul neantrenat\" href=\"https:\/\/kul.ro\/blog\/2012\/12\/miocardul-neantrenat\/\" rel=\"nofollow\">Read More &rarr;<\/a>","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[35],"class_list":["post-4096","post","type-post","status-publish","format-standard","hentry","category-orice","tag-cartz"],"_links":{"self":[{"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/posts\/4096","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/comments?post=4096"}],"version-history":[{"count":0,"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/posts\/4096\/revisions"}],"wp:attachment":[{"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/media?parent=4096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/categories?post=4096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kul.ro\/blog\/wp-json\/wp\/v2\/tags?post=4096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}