Cation-exchange resins tau siv los kho hyperkalaemia los ntawm kev ua kom cov poov tshuaj poob qis hauv lub plab, tshwj xeeb tshaj yog cov ntsiab lus ntawm cov zis tsis zoo lossis ua ntej lim ntshav (qhov zoo tshaj plaws ntawm kev kho hyperkalaemia). Cov resins suav nrog kev sib sau ua ke ntawm cov tshuaj tsis haum loj uas nqa cov nqi tsis zoo, uas xoob xoob khi zoo ions (cations); cov no tau pauv pauv nrog cations hauv ib puag ncig cov kua mus rau qhov uas nyob ntawm lawv qhov kev nyiam rau cov tshuaj thiab lawv cov concentration.
Resins thauj nrog sodium lossis calcium pauv cov cations no tshwj xeeb nrog cov poov tshuaj cations hauv cov hnyuv (li 1 mmol potassium ib g cob); cov cation uas tau tso tawm (calcium lossis sodium) tau nqus thiab cov tshuaj ntxiv nrog cov poov tshuaj ntxiv rau hauv cov quav. Cov tshuaj tsis yog tsuas yog tiv thaiv kev nqus ntawm cov poov tshuaj noj, tab sis nws tseem siv cov poov tshuaj ib txwm tso rau hauv txoj hnyuv thiab ib txwm rov ua dua.
Hauv hyperkalaemia, kev siv lub qhov ncauj lossis tso quav tso quav ntawm polystyrene sulphonate cob tuaj yeem siv tau. Cov tshuaj sodium-phase resin (Resonium A) yuav tsum pom tseeb tsis siv rau cov neeg mob lub raum lossis lub plawv tsis ua haujlwm vim sodium ntau dhau yuav ua rau. Cov tshuaj calcium-theem cob (Calcium Resonium) tuaj yeem ua rau hypercalcaemia thiab yuav tsum zam hauv cov neeg mob uas muaj tus kab mob, piv txwv li cov uas muaj ntau yam mob myeloma, mob qog noj ntshav metastatic, hyperparathyroidism thiab sarcoidosis. Qhov ncauj lawv tsis txaus ntseeg, thiab raws li cov neeg mob enemas tsis tshua muaj peev xwm tswj hwm lawv kom ntev li qhov tsim nyog (tsawg kawg 9 h) los pauv cov poov tshuaj ntawm txhua qhov chaw muaj nyob ntawm cov tshuaj.
Sijhawm Tshaj Tawm: Jun-24-2021