![Lub superior vena cava ceg ua dab tsi? Lub superior vena cava ceg ua dab tsi?](https://i.answers-medical.com/preview/medical-health/14026710-what-does-the-superior-vena-cava-branch-into-j.webp)
Video: Lub superior vena cava ceg ua dab tsi?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov superior vena cava ( SVC ) yog tus superior ntawm ob lub venae cavae, cov hlab ntshav loj uas rov xa cov ntshav deoxygenated los ntawm cov txheej txheem rau txoj cai atrium ntawm lub plawv. Nws yog qhov loj-txoj kab uas hla (24 hli) cov hlab ntshav ntev uas tau txais cov ntshav rov qab los ntawm ib nrab ntawm lub cev, saum lub diaphragm.
Ib yam li ntawd, koj yuav nug, dab tsi yog qhov ua haujlwm ntawm cov vena cava zoo dua?
Cov venae cavae zoo dua thiab qis dua ua lub luag haujlwm tseem ceeb hauv kev ncig ntshav thaum lawv xa cov ntshav tsis zoo rau lub plawv rau rov ua pa thiab rov ua dua. Superior Vena Cava: Cov hlab ntshav loj no nqa cov pa oxygen los ntawm lub taub hau, caj dab, caj npab, thiab hauv siab thaj tsam ntawm lub cev mus rau txoj cai atrium.
Ib sab saum toj no, cov hlab ntsha twg tau ncaj qha mus rau hauv lub superior vena cava? Jugular leeg. Jugular leeg, ib qho ntawm ob peb leeg ntawm lub caj dab uas ntws ntshav los ntawm lub hlwb, lub ntsej muag, thiab caj dab, rov qab los rau lub plawv ntawm superior vena cava.
Ib yam li ntawd ib tug yuav nug, yuav ua li cas ntshav rov qab mus rau lub superior vena cava los ntawm lub hlwb?
Cov superior vena cava nqa ntshav los ntawm lub hlwb thiab caj npab rau sab saum toj ntawm txoj cai atrium. Qhov qis dua vena cav nqa ntshav los ntawm ob txhais ceg thiab kab noj hniav mus rau hauv qab ntawm txoj cai atrium.
Vim li cas qhov zoo tshaj plaws vena cava tseem ceeb?
Cov superior vena cava yog heev tseem ceeb rau kev ua haujlwm ntawm cov hlab plawv, vim nws feem ntau ua rau cov ntshav nkag mus rau sab xis atrium. Cov txheej txheem hypertensive nyob rau hauv txoj cai ib nrab ntawm lub plawv los yog nyob rau hauv lub pulmonary ncig retrogradelly cuam tshuam rau ob leeg. zoo tshaj thiab inferior venae cavae.
Pom zoo:
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Cov khoom siv hauv lub cev zom zaub mov suav nrog cov hniav, tus nplaig, cov qog ua kua qaub, daim siab, lub zais zis, thiab txiav txiav. Txhawm rau ua tiav lub hom phiaj ntawm kev muab lub zog thiab khoom noj khoom haus rau lub cev, rau lub luag haujlwm tseem ceeb nyob hauv cov txheej txheem zom zaub mov: nqos. Kev zais. Sib tov thiab txav mus los. Digestion. Kev nqus. Kev tshem tawm
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Cov vena cava qis dua nqa ntshav los ntawm ob txhais ceg thiab kab noj hniav hauv plab mus rau hauv qab ntawm txoj cai atrium. Vena cava kuj tseem hu ua 'cov leeg hauv plawv'. Central venous catheters tau tso nrog cov lus qhia hauv lossis ze rau qhov ua tau zoo ntawm vena cava qis dua
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Hauv kev xyaum, muaj plaub hom kab mob prosthetic, uas hloov ib feem lossis ua tiav ntawm caj npab lossis ceg: Hauv qab lub hauv caug (BK, transtibial): Ib txhais ceg sab sauv txuas rau sab ceg sab sauv. Saum toj no lub hauv caug (AK, transfemoral): Ib tug prosthetic qis thiab sab ceg, nrog rau lub hauv caug prosthetic
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Lub cranial (superior) vena cava thauj tag nrho cov ntshav los ntawm cranial (zoo dua) mus rau lub diaphragm rov qab mus rau sab xis atrium ntawm lub plawv. Nws pib qhov twg ob txoj hlab ntsha brachiocephalic koom nrog hauv cheeb tsam cranial (siab dua)
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Muaj nuj nqi. Lub inferior vena cava yog cov leeg. Nws nqa cov ntshav deoxygenated los ntawm qis ib nrab ntawm lub cev mus rau sab xis atrium ntawm lub plawv. Cov hlab ntsha sib thooj uas nqa cov ntshav deoxygenated los ntawm ib nrab ntawm lub cev yog qhov zoo tshaj vena cava