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.
