Blood Specimen Collection Heparin Tube
Lus piav qhia luv luv:
Heparin Blood Collection Tubes muaj lub ntsej muag ntsuab thiab muaj cov tshuaj tsuag-qhuav lithium, sodium los yog ammonium heparin rau ntawm phab ntsa sab hauv thiab siv rau hauv kev kho mob chemistry, immunology thiab serology.Lub anticoagulant heparin activates antithrombin, uas blocks lub clotting cascade thiab yog li tsim ib tug tag nrho. ntshav/plasma qauv.
Hemorheology, kuj spelled hemorheology (los ntawm Greek 'αἷμα,haum' ntshav' thiab rheology, los ntawm Greek ῥέωrov, 'flow' thiab -λoγία,-logia'kev kawm ntawm'), lossis ntshav rheology, yog kev kawm txog cov khoom ntws ntawm cov ntshav thiab nws cov ntsiab lus ntawm plasma thiab cell.Property perfusion tuaj yeem tshwm sim tsuas yog thaum cov ntshav rheological zog nyob hauv qee theem. Kev hloov pauv ntawm cov khoom no ua lub luag haujlwm tseem ceeb hauv cov kab mob. Cov txheej txheem.Cov ntshav viscosity yog txiav txim siab los ntawm cov ntshav viscosity, hematocrit (ntim feem ntawm cov ntshav liab, uas yog 99.9% ntawm cov cellular cov ntsiab lus) thiab txhua yam khoom ntawm cov qe ntshav liab.Cov qe ntshav liab muaj tus cwj pwm txawv txawv, uas tuaj yeem tham hauv qab no. Cov ntsiab lus erythrocyte deformability thiab erythrocyte aggregation.Vim li ntawd, cov ntshav coj li cov kua dej uas tsis yog-Newtonian.Yog li ntawd, cov viscosity ntawm cov ntshav txawv nrog shear npaum li cas.Cov ntshav yuav tsawg viscous ntawm siab shear tus nqi zoo li cov uas muaj kev nce siab xws li thaum lub sij hawm ua si. los yog nyob rau hauv ncov-systole.Yog li ntawd, cov ntshav yog ib tug shear-thinning kua.Contrarily, cov ntshav viscosity nce thaum shear npaum li cas mus nrog nce hlab diameters los yog nrog tsawg ntws, xws li downstream los ntawm ib tug obstructive los yog nyob rau hauv diastole.Cov ntshav viscosity kuj nce nrog. nce ntshav liab aggregability.
Ntshav viscosity
Ntshav viscosity yog ib qho kev ntsuas ntawm qhov tsis kam ntawm cov ntshav ntws.Nws kuj tuaj yeem piav qhia raws li qhov tuab thiab nplaum ntawm cov ntshav.Cov cuab yeej biophysical no ua rau nws qhov kev txiav txim siab tseem ceeb ntawm kev sib txhuam ntawm cov phab ntsa ntawm cov hlab ntsha, tus nqi ntawm cov hlab ntsha rov qab los, kev ua haujlwm yuav tsum tau ua rau lub plawv dhia ntshav, thiab cov pa oxygen thauj mus rau cov ntaub so ntswg thiab cov kabmob.Cov dej num ntawm cov hlab plawv system yog ncaj qha ntsig txog vascular kuj, preload, afterload, thiab perfusion, feem.
Lub hauv paus ntsiab lus ntawm cov ntshav viscosity yog hematocrit, ntshav liab deformability, ntshav liab sib sau ua ke, thiab ntshav viscosity.Plasma lub viscosity yog txiav txim los ntawm cov dej-cov ntsiab lus thiab macromolecular Cheebtsam, yog li cov yam ntxwv uas cuam tshuam rau cov ntshav viscosity yog cov ntshav plasma protein ntau thiab hom. Txawm li cas los xij, hematocrit muaj qhov cuam tshuam zoo tshaj plaws rau tag nrho cov ntshav viscosity.Ib chav tsev nce hematocrit tuaj yeem ua rau nce mus txog 4% hauv cov ntshav viscosity.Qhov kev sib raug zoo no ua rau muaj kev nkag siab zoo li hematocrit nce.Thaum hematocrit nce mus txog 60 lossis 70%, uas feem ntau ua hauv polycythemia, ntshav viscosity tuaj yeem ua tau zoo li 10. Lub sij hawm ntawm cov dej, thiab nws cov dej ntws los ntawm cov hlab ntsha yog heev retarded vim muaj zog tsis kam mus txaus.Qhov no yuav ua rau kom cov pa oxygen tsawg, Lwm yam cuam tshuam rau cov ntshav viscosity muaj xws li qhov kub thiab txias, qhov twg qhov kub thiab txias ua rau txo qis viscosity.Qhov no tseem ceeb tshwj xeeb tshaj yog nyob rau hauv hypothermia, qhov uas nce ntshav viscosity yuav ua rau muaj teeb meem nrog ntshav ncig.
Clinical tseem ceeb
Ntau qhov kev pheej hmoo ntawm cov hlab plawv tau ua rau nws tus kheej txuas nrog tag nrho cov ntshav viscosity.
