2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Vim tias cov hlab ntsha no hla mus rau myocardium, myocardial contraction thaum lub sij hawm systole compresses arterial ceg thiab tiv thaiv perfusion. Yog li ntawd, coronary perfusion coronary perfusion Coronary perfusion siab (CPP), tseem hu ua yooj yim perfusion siab, yog hais txog lub siab gradient uas ua rau cov ntshav siab, txhais tau tias qhov txawv ntawm diastolic aortic siab thiab sab laug ventricular kawg diastolic siab. Nws yog ib lo lus siv feem ntau hauv kev tshawb fawb txog kev mob plawv. https://en.wikipedia.org › wiki › Coronary_perfusion_pressure
Coronary perfusion siab - Wikipedia
tshwm sim thaum diastole es tsis yog systole.
Nyob rau theem twg ntawm lub voj voog lub plawv ua rau cov hlab ntsha coronary sau?
Cov ntshav ntws mus rau hauv cov hlab ntsha yog qhov loj tshaj thaum lub sij hawm ventricular diastolethaum aortic siab siab tshaj plaws thiab nws loj dua hauv coronaries.
Vim li cas cov hlab ntsha coronary perfused thaum lub sijhawm diastole?
Cov ntshav ntws feem ntau tshwm sim thaum lub sij hawm diastole vim lub vasculature coronary muaj ib qho khoom tshwj xeeb: nws yog compressed los ntawm kev cog lus myocardium xws li tsis muaj dej tshwm sim thaum lub sij hawm systole.
Yuav ua li cas cov hlab ntsha coronary perfused?
Vim li ntawd, feem ntau myocardial perfusion tshwm sim thaum lub plawv so (diastole) thaum cov hlab ntsha subendocardial coronary qhib thiab qis dua. Flow yeej tsis tuaj mus rau xoom nyob rau hauv txoj cai coronary artery, txij li thaum lub ventricular siab yog tsawg tshaj li diastolic ntshav siab.
Dab tsi ua rau cov hlab ntsha tawg?
Txoj hlab ntsha mus tas li yog xav tias feem ntau yog tshwm sim los ntawm mob, tshwm sim los ntawm kab mob, tshuaj lom neeg, lossis kev ntxhov siab ntawm lub nkoj.
Pom zoo:
Thaum twg cov hlab ntsha femoral ua saphenous?
[6] Cov hlab ntsha femoral dhau los ua cov hlab ntsha saphenous thaum nws dhau los ntawm tus kav dej adductor. Nws txuas ntxiv mus raws qhov nruab nrab ntawm tibia mus txog rau ib nrab ntawm tibia, qhov twg thaum kawg nws faib ua ob ceg.
Cov kab mob capillaries cuam tshuam li cas nrog cov hlab ntsha thiab cov leeg?
Capillaries txuas cov hlab ntsha mus rau cov leeg. Cov hlab ntsha xa cov ntshav oxygen nplua nuj mus rau cov hlab ntsha, qhov twg qhov sib pauv ntawm cov pa thiab carbon dioxide tshwm sim. Cov capillaries tom qab ntawd xa cov ntshav pov tseg uas nplua nuj mus rau cov leeg kom thauj rov qab mus rau lub ntsws thiab lub plawv.
Thaum twg siv cov tshuaj tua kab mob hauv cov hlab ntsha?
Ib qho tshuaj tua kab mob yog siv txhawm rau tshuaj xyuas koj lub raum, ureters thiab zais zis. Nws cia koj tus kws kho mob pom qhov loj thiab cov duab ntawm cov qauv no thiab txiav txim siab seb lawv puas ua haujlwm zoo. Pyelography siv rau dab tsi?
Thaum cov kab mob kab mob nkag mus rau hauv cov hlab ntsha?
Kev kis kab mob nrog cov kab mob tsis tas ua rau kab mob. Kev kis kab mob tshwm sim thaum cov kab mob, kab mob, lossis lwm yam kab mob nkag mus rau hauv koj lub cev thiab pib sib kis. Kab mob tshwm sim thaum cov hlwb hauv koj lub cev puas lawm vim yog kis kab mob thiab cov tsos mob thiab cov tsos mob tshwm sim.
Puas yog cov hlab ntsha loj dua cov hlab ntsha?
Arterioles nqa ntshav thiab oxygen mus rau hauv cov hlab ntsha me tshaj plaws, cov hlab ntsha. Capillaries yog li ntawd small lawv tsuas pom tau nyob hauv lub tshuab tsom. Cov phab ntsa ntawm capillaries yog permeable rau oxygen thiab carbon dioxide.
