I-Blood Specimen I-Heparin Tube

I-Hemorrheology, futhi i-spelled hemorrheology (kusuka ku-Greek 'αἷμα,hayima'igazi' kanye ne-rheology, kusukela ku-Greek ῥέωrhéo,'flow' kanye -λoγία,-logia'Ucwaningo'), noma i-rheology yegazi, ucwaningo lokugeleza kwegazi kanye nezakhi zalo ze-plasma namaseli.Ukugcotshwa kwezicubu okufanelekile kungenzeka kuphela lapho izakhiwo zegazi ze-rheological zingaphakathi kwamazinga athile. Izinqubo.I-viscosity yegazi inqunywa i-plasma viscosity, i-hematocrit(ingxenye yevolumu yengqamuzana elibomvu legazi, eyakha u-99.9% wezakhi zamangqamuzana) kanye nezakhiwo zamangqamuzana egazi abomvu. ngokwemibandela ukukhubazeka kwe-erythrocyte kanye ne-erythrocyte aggregation.Ngenxa yalokho, igazi liziphatha njengoketshezi olungeyona i-Newtonian.Kanjalo, i-viscosity yegazi iyahlukahluka ngokwezinga lokugunda.Igazi liba lincane kakhulu i-viscous ngezinga eliphezulu lokugunda njengalawo abhekana nokugeleza okukhulayo njengalapho ukuzivocavoca noma ku-peak-systole.Ngakho-ke, igazi liwuketshezi olunciphisa i-shear.Ngokuphambene, i-viscosity yegazi iyanda lapho izinga le-shear lehla kanye nokwenyuka kwamadiamitha esitsha noma nokugeleza okuphansi, njengokwehla komfula kusuka ekuvinjweni noma ku-diastole.I-viscosity yegazi nayo iyanda ukwanda kokuhlangana kwamaseli abomvu.

I-viscosity yegazi

I-viscosity yegazi iyisilinganiso sokumelana kwegazi ukuze ligeleze.Kungabuye kuchazwe njengokuqina nokunamathela kwegazi.Lesi sakhiwo se-biophysical sikwenza kube yisici esinqumayo sokungqubuzana kwezindonga zomkhumbi, izinga lokubuya kwe-venous, umsebenzi odingekayo ukuze inhliziyo iphampe igazi, nokuthi ingakanani i-oxygen ehanjiswa ezicutshini nasezithweni.Le misebenzi yohlelo lwenhliziyo nemithambo yegazi ihlobene ngqo nokumelana nemithambo, ukulayisha kuqala, ukulayishwa ngemva kwalokho, kanye nokugcotshwa, ngokulandelana.

Izinqumo eziyinhloko ze-viscosity yegazi i-hematocrit, ukukhubazeka kwamangqamuzana egazi abomvu, ukuhlangana kwamangqamuzana abomvu egazi, kanye ne-plasma viscosity.I-viscosity ye-Plasma inqunywa okuqukethwe kwamanzi kanye nezingxenye ze-macromolecular, ngakho lezi zici ezithinta i-viscosity yegazi ukugxila kwamaprotheni e-plasma kanye nezinhlobo ze-plasma. amaprotheni ku-plasma.Noma kunjalo, i-hematocrit inomthelela onamandla kuwo wonke ama-viscosity wegazi.Ukwenyuka kweyunithi eyodwa ku-hematocrit kungabangela ukwanda okungafika ku-4% ku-viscosity yegazi.Lobu budlelwane buba bucayi kakhulu njengoba i-hematocrit yanda.Lapho i-hematocrit ikhuphukela ku-60 noma u-70%, okuyinto evame ukuyenza ku-polycythemiatheviscosity yegazi ingaba yi-10. izikhathi zamanzi, nokugeleza kwawo emithanjeni yegazi kuba nzima kakhulu ngenxa yokwanda kokumelana nokugeleza.Lokhu kuzoholela ekwehleni kokulethwa komoyampilo,Ezinye izici ezithonya i-viscosity yegazi zihlanganisa izinga lokushisa, lapho ukwanda kwezinga lokushisa kubangela ukuncipha kwe-viscosity.Lokhu kubaluleke kakhulu ku-hypothermia, lapho ukwanda kwe-viscosity yegazi kuzodala izinkinga ngokujikeleza kwegazi.

Ukubaluleka komtholampilo

Izici eziningi ezivamile eziyingozi zenhliziyo ziye zaxhunyaniswa ngokuzimele ne-viscosity yegazi lonke.