Nezenhliziyo. valve inhliziyo - lokuphila komuntu

nenhliziyo enempilo ibizwa ngokuthi eqinile, ukusebenza ngokuqhubekayo futhi ngaphandle kokuphazamiseka umzimba. Ubukhulu bayo oluhambisana ubukhulu isibhakela womuntu nesisindo kungathi izingalo ezingamakhulu amahlanu amagremu. Ngaphezu umsebenzi wayo oyinhloko ukuqinisekisa evamile (ezinzile) ukugeleza kwegazi, uyakwazi ukuzivumelanisa nezidingo ekushintsheni umzimba njalo.

Ukusebenza njengoba futha ezimbili ngendlela, inhliziyo inikeza kwegazi igazi wonke umzimba. Esebenzisa odongeni kwemisipha (septum) ihlukaniswe yaba neengcezu. isigamu ngalinye linama emakamelweni amabili (Atria futhi ventricles).

I-ATRIUM kwesokudla uthola igazi kulo lonke izingxenye engezansi futhi engaphezulu kuphela yomzimba. Ngokusho valve tricuspid igazi liya i-ventricle yangakwesokudla, lapho, ngokuhlangana ukukhanya umphini stem therein iphampa igazi. Nomoya-mpilo, it is ithunyelwa ATRIUM ngakwesokunxele. Kusuka lapho ku le mitral umphini igazi liya ku-i-ventricle engakwesobunxele, okuyinto valve yomthambo i-aorta ihambisa igazi wonke umzimba. Kuhlomisa umzimba oksijini, it is mpilo, futhi engena ATRIUM kwesokudla.

Inhliziyo valve Uvula e uhlangothi "iminyango" okwakuphakathi kwamakamelo. Abagcini ngokujabulela ukusekela ukuthuthukiswa wegazi phambili, kodwa futhi ukuvimbela ukuhamba kwayo emuva. Healthy inhliziyo valve babe amacembe, ehlanganisa mncane, ifomu nezimo izicubu evamile. Lapho inhliziyo iphumule kanye entengo kokuvula kanye nokuvala senzeka ngokushelela.

Kwasekuzalweni kungabangela egunjini lokuhlolwa kwezifo. Inhliziyo valve kungenziwa embozwe izibazi noma silimele ngenxa yokungenwa yizifo ezithathelwanayo, imfiva ye-rheumatism, izifo ngofuzo isifo senhliziyo. Umonakalo kungase kubangelwe emandleni engu womuntu. Labo abasengozini enkulu kukhona valve mitral. Uma lokhu kwenzeka reguritatsiya (regurgitation mitral), lapho kukhona ukuvuza igazi valve ohlangothini reverse nangemuva kokuvala valve. Kulokhu, lo umsebenzi inhliziyo iba bazolokhu - it uzama ukusebenzisa lemali edingekile kwegazi emzimbeni futhi liyakwazi ukubuyisela ukwehluleka. Ukulimala valve inhliziyo futhi zihlanganisa stenosis (olugcwele kuvulwa valve), lapho igazi sidlula valve ezimbi. Kulokhu, njengoba umzimba uqala ukusebenza nzima ake igazi ngokwanele ngembobo emincane. Okunjalo ukungezwani ezengeziwe inhliziyo buthakathaka ke, kudala ke ukwandisa futhi kubangela izifo ezihlukahlukene.

Ezimweni eziningi, abantu ukuphuza imithi ebalulekile ngaphansi kweso olufanele lwezokwelapha, isifo senhliziyo, siphile ukuphila okwanelisayo. Nokho, kwenzeka ukuthi izidakamizwa musa abalethanga umphumela noma eyingozi empilweni. Kuye isimo, udokotela angase akunikeze sokubuyiselwa noma wokufakelwa valve mitral. Nokho, uma deformations sina noma ukulimala yokutakula ngeke nilingenise imiphumela emihle. Esimweni abukhuni ezinjalo, udinga esikhundleni inhliziyo valve. kokungenela Steel kuyadingeka ngesikhathi kuqala izimpawu of ezingamahlalakhona inhliziyo ukwehluleka kanye ukwehla okukhulu ejection wegazi i-ventricle engakwesobunxele (systole ukungasebenzi).

Ukwakha (sokubuyiselwa, plastic) ka-valve Kwenziwa kulondolozwe inhliziyo yakhe valve siqu. Kulokhu, ngemuva kokuhlinzwa isiguli alikho isidingo reception njalo imithi ehlambulula igazi.

Nge eqinile, hhayi amenable ukuba balungise ezilimele liqoke esikhundleni (wokufakelwa) valve. Ngenxa yale njongo, mechanical (yokufakelwa) noma ezingamagciwane (izicubu) lokufakelwa kwezitho.

Mechanical inhliziyo valve zinokwethenjelwa kakhulu futhi isikhathi eside, asidingi esikhundleni. Nokho, banalo ethile abalulekile - ukuze kuvinjelwe igazi coagulation, isiguli emva kokuhlinzwa ekhethwe elihambisana ukuthaka imithi ukuphila.

lokufakelwa kwezitho eziphilayo ezenziwe kusukela iphathwa amakhemikhali isilwane izinhliziyo ingxenyenamba (amahhashi, izinkomo noma izingulube). Ngemva kokufaka we sokwenziwa izicubu umphini isiguli akukashicilelwa imithi, igazi thinners. Nokho, ukuphila inkonzo sokwenziwa lilinganiselwe ngesikhathi, futhi ngemva kwenkathi ethile (iminyaka eyishumi nanhlanu) uyabhujiswa, okuholela kungenzeka uzohlinzwa okwesibili.