Ukwephula inqubo repolarization.

Ukwephulwa protsesa repolarization - the angahlangani esilandelayo esimiso senhliziyo nemithambo yegazi, ikakhulukazi - a zokugula okuyingxenye conductive futhi abangothathekile ijwabu inhliziyo. Izinguquko ezinjalo, ngakho zinezikhathi izinguquko ngokuyinhloko concomitant ku electrocardiogram. Iningi Ngokuvamile ubonakaliswa isimo sengqondo ukwephulwa repolarization ezimbi (noma ahlelwe ngesikhathi nentaba) izinyo T in the lokuqala nelesibili ejwayelekile imikhondo. Isibonelo esifanayo, kanye shift of ST ingxenye engezansi emigqeni nentaba, ebonwe kuholela AVL kanye lesihlanu nelesithupha esifubeni imikhondo.

Ngokuvamile lezi zimpawu yilezi nobuntu iziyaluyalu enezinkinga we nozwela isimiso sezinzwa, okungukuthi zenhliziyo sokusebenza.

Lokhu zenhliziyo kubonakala ukuhlukumeza inqubo repolarization ijwabu senhliziyo esilimele (myocardium) ezingaba ukuqalisa conduction iziyaluyalu nomsebenzi inhliziyo isigqi. Ukwephulwa repolarization inqubo kungadalwa iqembu elikhulu causative (etiological) izici. Zonke lezi zici zihlanganisiwe zenziwa amaqembu amane esekelwe amaphuzu ezivamile izinqubo pathophysiology. Iqembu lokuqala - izifo eziholela ukuphazamiseka ukulawulwa neuroendocrine ka esimiso senhliziyo nemithambo yegazi, kuhlanganise izindlela kuphazamiseka potassium ukulawulwa amazinga catecholamine. Isigaba sesibili sihlanganisa zonke izilonda esiwohlozayo futhi sokuvuvukala kwezicubu kwemisipha inhliziyo. Ngaphezu kwalokho, kahle repolarization inqubo kungadalwa-sindisa noma hypertrophy esivimba amanzi. Iqembu lokugcina kuhlanganisa iziyaluyalu yesibili okuholela ukwanda of QRS eziyinkimbinkimbi (amagatsha ukuvinjelwa ventriculonector, WPW syndrome).

Ukuhlukumeza ezivamile yenqubo repolarization eba ngenxa hypersympathicotonia. Lokhu zokugula kuzibonakalisa ingane isencane futhi libhekene nenkinga yezinga anda hormone (adrenaline futhi noradrenaline) kabili uma ziqhathaniswa kuyinsakavukela. Ngaphezu kwalokho, ukwephulwa kwamalungelo repolarization e myocardium kungadalwa hhayi amazinga aphakeme la ma-hormone egazini, anda kakhulu uzwela izicubu zenhliziyo ukuze catecholamines. Ngenxa yalokho, esikhathini okuvamile i-hormone amazinga, kukhona ephelele uzwakalise emitholampilo isithombe hypersympathicotonia.

Phakathi kwezimbangela of ukushayisana kwe repolarization we myocardium, share elikhulu okulandelayo: isifo senhliziyo-coronary, izindlela kahle kanye ukulandelana isigaba depolarization gmpertrofiya futhi overvoltage kwemisipha ventricular izicubu iziyaluyalu e electrolyte ibhalansi (ngokukhethekile - iziyaluyalu sodium ne-potassium ibhalansi).

Iqembu ehlukile siqukethe yokungabibikho kwezimbangela ezithile. Eqinisweni, repolarization kahle ijwabu senhliziyo esilimele kulokhu kungekho khona ebonakalayo izizathu inhloso. Kulokhu, Ihlahlubo umehluko ukuxilongwa akazivezi izimbangela abalulekile zokugula.

Ukuphazamiseka okunjalo okukhulu ngokujwayeleka intsha usakhula. Iningi lezi zinkinga kukhona izivakashi futhi akudingeki ukwelashwa. Nokho, ngisho nalapho engekho ukwelashwa ukuphathwa salezi ziguli kudinga Dynamics njalo ECG idatha. Ukwelashwa nokuvikelwa repolarization esivimba amanzi Ngokuyinhloko nokuqedwa ukuchayeka isici causative, okungukuthi, kwelashwa uhlamvu etiotropic.

Ngokuyinhloko, ukuphathwa inalokhu ukuthaka imithi ngendlela eziyinkimbinkimbi ehlanganisa kortikotropnogo hormone, propranolol, panangina, cocarboxylase ne vitamin amalungiselelo. Kunoma ikuphi, ngesikhathi ekwelapheni lesi sifo kudinga impoqo luhlolo emitholampilo isiguli.