Qhov txheej txheem ua tau li cas?
Ua ntej dopplerography ntawm fetus, tus kws kho mob pom lub cheeb tsam nyob rau hauv kev tshawb nrhiav: vessels ntawm uteroplacental ntshav khiav, vessels ntawm lub hlwb, lub plawv, daim siab. Los ntawm activating Doppler muaj nuj nqi thiab xa cov sensor rau yam hauv kev kuaj mob, tus kws kho mob yuav tau txais ib daim duab ntawm qhov screen. Lub tshuab yuav tsom xam cov ntaub ntawv no ntawm nws tus kheej. Cov txheej txheem yog qhov tsis mob kiag li thiab luv luv-10-15 feeb.
Puas yog txhua tus kws kho mob dopplerography?
Dopplerography ntawm txoj hlab ntsha uteroplacental yog sau rau txhua tus pojniam cev xeeb tub thaum lub sijhawm 32th ntawm kev xeeb tub. Yog tias muaj cov cim tshwj xeeb (kev ua tsis taus pa, kev poob siab ntawm kev loj hlob hauv kev loj hlob), txoj kev tshawb no yuav ua ntej dhau lub sijhawm no (22-24 lub lim tiam).
Dopplerography kuj tseem sau rau hauv cov rooj plaub xws li:
- ntau tus cev xeeb tub;
- Rhesus-fetus thiab niam tsis sib haum xeeb.
Tsis tas li ntawd, thaum muaj qhov tsis zoo ntawm tus me nyuam hauv plab tsis sib haum rau lub hnub nyoog gestational, ultrasound ntawm lub fetus nrog dopplerography tuaj yeem muab rau kev ntsuam xyuas ntshav txaus.
Dab tsi yog kuaj tau kuaj hauv Doppler?
Nyob rau hauv tag nrho, muaj 2 hlab ntsha thiab 1 leeg nyob rau hauv txoj hlab ntaws, uas muab lub fetus nrog cov as-ham thiab cov pa. Yog li ntawd, ntawm cov ntshav ntawm cov ntshav ntshav mus rau ntawm tus menyuam mos. Los ntawm cov hlab ntsha, cov khoom siv los ntawm cov hniav lwj raug tshem tawm ntawm lub fetus.
Rau kev ua haujlwm zoo li ntshav khiav, kev ua haujlwm hauv cov phab ntsa ntawm cov hlab ntsha yuav tsum tsawg. Nyob rau hauv cov ntaub ntawv ntawm lub qeeb ntawm lub nkoj, cov pa oxygen deficiency tsim, uas cuam tshuam tsis zoo rau cov kev loj hlob ntawm intrauterine.
Cov kab mob ntshav ntws tuaj yeem kuaj li cas nrog Doppler?
Thaum ua dopplerography ntawm fetal hlab ntsha, cov cim nram no yog tsim muaj:
- ntshav ntws tshaj tawm,
- vascular siab,
- elasticity ntawm cov hlab ntsha.
Thaum muab piv rau cov txiaj ntsim tau txais, ntau cov kev mob ntawm cov ntshav khiav tau. Yog li, faib:
- 1 degree A - thaum twg muaj qhov ua tsis haum nyob rau hauv cov hlab ntws hauv plab menyuam, tab sis qhov plab hnyuv hauv plab ntsws hauv plab ntsws yeej ua haujlwm zoo li qub;
- 1 degree B - yog tshwm sim thaum lub plab hlaub fetus-placenta puas, thiab txoj hlab ntsha uteroplacental tsis muaj teeb meem;
- 2 degree - thaum muaj kev ua txhaum cai tam sim no hauv 2 systems, tab sis lawv tsis tseem ceeb;
- 3 degree - raug cai thaum cov kev ua txhaum ntawm plab hnyuv plab plab hauv lub cev tseem ceeb heev, thiab txoj hlab ntsha uteroplacental ntshav muaj kev cuam tshuam.
Thaum muaj 1 degree ntawm kev ua txhaum, tus poj niam cev xeeb tub tau pom txhua lub sijhawm. Kev kuaj thiab ultrasound yog ua ib zaug ib lub lim tiam. Tib lub sij hawm, yog tias CTG nrhiav tsis tau qhia txog kev ua txhaum cai thiab kev hem thawj rau lub sijhawm ntxiv ntawm cev xeeb tub, lub hnub yug yuav tau ua tiav raws sijhawm.
Nrog 3 degree ntawm kev ua txhaum, ib tug poj niam yog tus saib xyuas txhua txhua hnub los ntawm cov kws kho mob, thiab thaum muaj kev phom sij rau kev xeeb tub, muaj ib qho kev mob plab.
Yog li, dopplerography ntawm fetus yog ib txoj kev tshawb fawb uas txiav txim seb tus uteroplacental ntshav ntws zoo li cas thiab seb tus menyuam puas hnov mob qhov teeb meem no.