Foley M E, Isherwood D M, McNicol G P
Br J Obstet Gynaecol. 1978 Jul;85(7):500-4. doi: 10.1111/j.1471-0528.1978.tb15622.x.
The viscosity at low shear rate of whole blood, plasma and serum, the haematocrit, plasma fibrinogen, plasma proteins, and IgM were measured in maternal and cord blood immediately following delivery. The whole blood viscosity in maternal blood (mean 19.96 +/- 3.74 centipoise or c/p) was similar to cord blood viscosity (mean 19.44 +/- 4.28 c/p). The mean haematocrit in maternal blood (0.385 +/- 0.026) was significantly lower than the cord haematocrit (0.488 +/- 0.39). Mean plasma viscosity (1.86 +/- 0.47 c/p) and plasma fibrinogen (4.25 +/- 0.75 g/litre) in maternal blood were significantly higher than cord plasma viscosity (1.12 +/- 0.19 c/p) and cord plasma fibrinogen (1.81 +/- 0.61 g/l). Mean serum viscosity (1.22 +/- 0.28 c/p) and mean IgM levels (2.38 +/- 0.36 g/l) in maternal blood were significantly higher than cord serum viscosity (0.90 +/- 0.15 c/p) and cord IgM (0.48 +/- 0.06 g/l). The low low levels of IgM and fibrinogen may protect the fetus from the increased viscosity that could be expected in association with a high haematocrit.
在分娩后立即测定母体血液和脐带血的全血、血浆和血清在低剪切速率下的粘度、血细胞比容、血浆纤维蛋白原、血浆蛋白和IgM。母体血液中的全血粘度（平均19.96±3.74厘泊或c/p）与脐带血粘度（平均19.44±4.28 c/p）相似。母体血液中的平均血细胞比容（0.385±0.026）显著低于脐带血细胞比容（0.488±0.39）。母体血液中的平均血浆粘度（1.86±0.47 c/p）和血浆纤维蛋白原（4.25±0.75 g/升）显著高于脐带血浆粘度（1.12±0.19 c/p）和脐带血浆纤维蛋白原（1.81±0.61 g/升）。母体血液中的平均血清粘度（1.22±0.28 c/p）和平均IgM水平（2.38±0.36 g/升）显著高于脐带血清粘度（0.90±0.15 c/p）和脐带IgM（0.48±0.06 g/升）。低水平的IgM和纤维蛋白原可能保护胎儿免受因高血细胞比容而预期增加的粘度的影响。
