Video: Ntshav viscosity txhais li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ntshav viscosity yog ib qho kev ntsuas ntawm lub thickness thiab stickiness ntawm tus neeg ntshav . Nws yog ib qho kev ntsuas ncaj qha ntawm lub peev xwm ntawm ntshav ntws los ntawm ntshav cov nkoj. Ua kom siab ntshav viscosity yog ib tug muaj zog ywj siab kwv yees ntawm cov kab mob plawv.
Dhau li ntawm no, dab tsi yog qhov viscosity ntawm tib neeg cov ntshav?
Li qub qib hauv pascal-seconds (Pa·s), lub viscosity ntawm ntshav yog 37 ° C ib txwm 3 × 10−3 rau 4 × 10−3, feem 3 - 4 centipoise (cP) hauv centimeter gram thib ob ntawm cov koog. Ntshav viscosity tuaj yeem ntsuas los ntawm viscometers muaj peev xwm ntsuas ntawm ntau qhov kev txiav tawm, xws li lub viscometer tig.
Ntxiv mus, yam dab tsi cuam tshuam rau ntshav viscosity? Ob qhov tseem ceeb tshaj plaws ntawm kev txiav txim siab ntshav viscosity yog cov qib hematocrit thiab fibrinogen. Hauv cov neeg mob uas muaj hematocrits hauv thaj tsam ntawm 47-53%, txo qis hematocrit los ntawm phlebotomy mus rau qis dua 40% tuaj yeem ua rau mob hlwb. ntshav ntws los ntawm ntau npaum li 50%. Ntshav siab kuj tseem ceeb.
Ua raws li qhov no, nws txhais li cas yog tias koj cov ntshav viscosity siab?
Cov lub plawv yuav ua hauj lwm nyuaj rau lub twj tso kua mis cov xav tau oxygen rau cov cev. Nws hais uas ntshav viscosity tuaj yeem nce vim ntawm ntau yam, xws li qee yam tshuaj, ntau liab ntshav hlwb, siab lipid qib, thiab lwm yam mob, suav nrog ntshav qab zib thiab mob qog noj ntshav.
Cov ntshav viscosity tswj los ntawm lub cev li cas?
Reinhart WH (1). Ntshav viscosity yog txiav txim los ntawm ntshav viscosity , hematocrit, erythrocyte deformability thiab aggregation. Plasma viscosity thiab hematocrit ncaj qha tswj los ntawm lub cev. Hematocrit yog tswj los ntawm erythropoietin, uas yog tsim los ntawm cov ntaub so ntswg hypoxia.
Pom zoo:
Qhov nruab nrab viscosity ntawm cov ntshav yog dab tsi?
Qib ib txwm nyob hauv pascal -seconds (Pa · s), cov ntshav viscosity ntawm 37 ° C feem ntau 3 × 10 & rho tawm; 3 txog 4 × 10 & rho tawm; 3, ntsig txog 3 - 4 centipoise (cP) hauv centimeter gram thib ob ntawm cov koog . Cov ntshav viscosity tuaj yeem ntsuas los ntawm viscometers muaj peev xwm ntsuas ntawm ntau tus nqi shear, xws li kev sib hloov viscometer
Cov kua ntshav ntshav yog dab tsi tom qab cov qe ntshav thiab cov ntshav khov tau raug tshem tawm?
Cov ntshav yog cov kua ntshav tom qab cov qe ntshav thiab cov protein sib xyaw tau raug tshem tawm. cov pa roj ntshav suav nrog oxygen, carbon dioxide, thiab nitrogen
Cov ntshav viscosity cuam tshuam li cas rau cov ntshav khiav?
Ua kom muaj viscosity nce qhov ua haujlwm ntawm cov ntshav khiav thiab yog li ua kom lub plawv ua haujlwm thiab ua rau lub cev tsis muaj zog. Ib yam li cov suab thaj, thaum ntshav tau txias, nws dhau los ua 'tuab' thiab ntws qeeb dua. Yog li ntawd, muaj kev cuam tshuam sib txawv ntawm qhov kub thiab viscosity
Koj ntsuas ntshav viscosity li cas?
Cov ntshav viscosity tuaj yeem ntsuas los ntawm viscometers muaj peev xwm ntsuas ntawm ntau tus nqi shear, xws li kev sib hloov viscometer
Yuav ua li cas yog tias ntshav viscosity nce?
Kev sib raug zoo ntawm BP thiab viscosity yog li ntawd, muab qhov systolic BP tas li, yog tias cov ntshav viscosity nce, ces tag nrho cov peripheral resistance (TPR) yuav tsum nce, yog li txo cov ntshav khiav. Hloov pauv, thaum viscosity txo qis, ntshav ntws thiab perfusion yuav nce