Video: Dab tsi yog txoj cai rau sab laug shunting hauv lub ntsws?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A shunt yog kev sib txuas lus txawv txav ntawm cov txoj cai thiab sab laug sab ntawm lub plawv los yog nruab nrab ntawm lub systemic thiab mob ntsws cov hlab ntsha, tso ntshav kom ntws ncaj qha los ntawm ib qho system mus rau lwm qhov. A txoj cai-rau-sab laug shunt tso cai rau deoxygenated systemic venous blood kom hla dhau lub ntsws thiab rov qab mus rau lub cev.
Tsis tas li ntawd, dab tsi yog shunting hauv lub ntsws?
A pulmonary qog Nws yog ib tug pathological mob uas tshwm sim thaum lub alveoli ntawm lub lub ntsws yog cov ntshav nrog cov ntshav zoo li qub, tab sis kev tso pa tawm (muab cov pa) ua tsis tiav los muab thaj av perfused. Hauv lwm lo lus, qhov tso pa tawm/qhov sib piv (qhov sib piv ntawm huab cua mus txog alveoli rau ntshav perfusing lawv) yog xoom.
Ib yam li ntawd, dab tsi ua rau pulmonary shunting? A ntsws ntsws feem ntau tshwm sim thaum lub alveoli sau nrog kua, ua qhov chaw ntawm lub ntsws yuav tsum unventilated txawm tias lawv tseem perfused. Intrapulmonary shunting yog lub ntsiab ua ntawm hypoxemia (cov ntshav tsis txaus oxygen) hauv mob ntsws edema thiab mob xws li mob ntsws uas ua rau lub ntsws ua ke.
Ib yam li ntawd, txoj cai rau sab laug shunt puas txaus ntshai?
Right-to-Left Shunt Txoj cai-rau-sab laug shunts ua rau cyanosis thaum yug los thiab, yog tias hnyav, yuav ua rau perinatal tuag tshwj tsis yog kho phais. Hom ntau tshaj ntawm txoj cai-rau-sab laug shunt yog tetralogy ntawm Fallot, uas suav txog li 6% ntawm cov kab mob hauv lub plawv (saib daim duab 7-21D).
Shunt ib txwm yog dab tsi?
Anatomic shunt muaj nyob rau hauv li qub lub ntsws vim yog cov hlab ntsws thiab thebesian ncig, uas suav txog 2-3% ntawm shunt . A li qub txoj cai-rau-sab laug shunt Tej zaum yuav tshwm sim los ntawm atrial septal defect, ventricular septal defect, patent ductus arteriosus, los yog arteriovenous malformation nyob rau hauv lub ntsws.
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