I-coronary arteries ndiyo mishonga yeropa inopa ropa kune myocardium (musimba wemwoyo). Nemhaka yokuti inofanira kushanda nguva dzose (kusiyana nemamwe mitsipa yemuviri, iyo inowanzozorora), mushumo wemwoyo une zvakanyanya zvakakosha zve okisijeni uye mishonga uye naizvozvo inoda kupiwa kwakakwana, kuenderera mberi kweropa. Iro coronary arteries yakagadzirirwa kuti ipe ropa rinoenderera rinodiwa kuti mwoyo ushande zvakanaka.
Kana ropa richiyerera kuburikidza ne-coronary arteries rinovharwa zvishoma, mushumo wemwoyo unogona kuva ischemic (oxygen-inoshayiwa nenzara), mamiriro ezvinhu anowanzobereka angina uye kudonha mumusasa basa (kuratidzwa neutera uye dyspnea ). Kana ropa richiyerera rakavharwa zvachose, mutsara yemwoyo inopiwa neyeri yakavharidzirwa inogona kutambura chirwere kana kero kufa. Izvi zvinonzi myocardial infarction, kana kuora mwoyo .
Anatomy yeCoronary Arteries
Iyo miviri yakawanda yemakoronary, aron coronary artery (RC) uye nechokuruboshwe (LM) gonari yerinari, inobva ku-aorta (mutezo mukuru wemuviri) kunze kwemoyo we-aortic valve.
IMT arteri inokurumidza matavi kuita mitsetse miviri miviri-kuruboshwe rwekunze kwechigodhi (LAD) uye ye-circumflex artery (Cx). Mwoyo wemisvo pachayo, zvino, inopiwa nechimwe chezvinhu zvitatu izvi zvinokonzera maronary metroyo: iLAD, iyo Cx, uye RC. Mufananidzo (uri pamusoro) unoratidza RC nemariti eLAD.
(The Cx artery inoratidzwa nemumvuri-semumvuri shure kwemoyo.)
Ita reRC inoratidzwa kurutivi rworuboshwe rwechimiro, ichifamba-famba pamucheto wemwoyo. Chikamu chakareba cheRC icho, mumufananidzo uyu, chinoenda kumucheto chaiwo wemwoyo (thepex) inonzi "posterior descending artery" (PDA).
Muvanhu vazhinji (inenge 75%) PDA inobva kuRC, semufananidzo uyu. Izvi zvinonzi "zvakakosha." Zvisinei, muna 25% PDA inobva kuArix artery, iyo inonzi "kuruboshwe". Izvi zvakakosha, sezvo (somuenzaniso) chirwere chemwoyo chinokonzerwa nekuvhara muRC mu mwoyo wakakosha unozoita zvakanyanya kukuvadza kupfuura zvaizoita mumoyo wakasara unorema.
Ita reRC uye matavi ayo anopa ropa kune imwe yenharaunda yakakodzera, ventricle yakarurama, node node , uye (mune vanhu vakawanda) yeAV node .
Kudzokera pamufananidzo, iyo DAD nematavi awo akawanda zvinoratidzwa zvichidzika zvichienda kumusoro kubva kumusoro kwemoyo. IAD inopa inrium kuruboshwe uye zvikamu zvakakura zvevashandi-kuruboshwe yekamuri huru yepombi. Saka kurwisa kwemwoyo kunokonzerwa nekuvhara muLAD kunowanzoita kukanganisa kukuru. Coronary artery plaques muLAD inowanzotaurwa nezvevadzidzi ve cardiologist se "vanoita chirikadzi."
Kukosha kwekukuvadza kwakaitwa kumutsipa wemwoyo munguva yekurwadziwa kwepfungwa hakungogumiri pane kuti arteri inobatwa sei asiwo pane nzvimbo yekuvhara mukati meyeri. Kuvhara kwepedyo pedyo nekubviswa kwe arteri kunogona kuita kukuvadza kwakanyanya kudarika kuvhara kunowedzera pasi arteri, kana mune imwe yematavi awo maduku.
Kana chirwere chemwoyo chichiitika, kuparadzwa kwekusingaperi kunogona kudziviswa kuburikidza nekuwana kurapa kwenguva pfupi, sezvo nzira dzakasiyana-siyana dziripo pakuvhura nokukurumidza kuvhiringidzika kweyeri yeroni.
Sources:
Farooq V, van Klaveren D, Steyerberg EW, et al. Anatomical uye kliniki maitiro ekutungamirira kugadzirisa pakati pekugadzirisa arteri nekuvhiya kwepamusoro uye percutaneous coronary intervention kune mumwe munhu anorwara: kukura nekugadziriswa kweSNTAX chikamu II. Lancet 2013; 381: 639.
Vanyori / Vashandi veMabasa, Mutevedzeri S, Kolh P, uye al. 2014 ESC / EACTS Zvinyorwa zvemyocardial revascularization: The Task Force paMyocardial Revascularization yeEuropean Society of Cardiology (ESC) neEuropean Association for Cardio-Thoracic Surgery (EACTS) Yakagadzirwa nemupiro unokosha weEuropean Association of Percutaneous Cardiovascular Interventions ( EAPCI). Eur Moyo J 2014; 35: 2541.