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This hemorheological data base was established with an Apple II computer. The covering technique was applied to deal with its lacks of memories. This data base had a mutual administration system and complete managing functions including inputting, inquiring, printing, transferring, revising functions and so on. More than twenty hemorheological parameters involving apparent viscosities of whole human blood, plasma viscosity, viscoelasticity and thixotropy indices, were saved in the way of paging mode. Meanwhile, this data base had a common mathematical statistics system in recently medical use. It included monovariable linear and nonlinear regressions, t-test, multiple linear regression, cluster analysis etc. Therefore, this data base can be conveniently utilized to analyze the hemorheological data comprehensively. Besides the establishment of normal hemorheological indices, this data base equipped a primary method of quantitative diagnosis through hemorheological indices, it gave a new method to diagnose some diseases and to observe their curing process. 相似文献
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作者报道了146例健康青年学生血液粘弹特性和其他多个流变参数和生化指标的测定结果。七项生化指标测定结果表明,血清球蛋白、胆固醇、血糖、纤维蛋白原男女组间无显著性差异(P>0.05),而血清白蛋白、血红蛋白、甘油三酯男子组明显高于女子组(P<0.01)。男女两组的血浆粘度η,无显著性差异(P>0.05),男性组HCT、η_(0.512)、η_(51.2)、AI、明显高于女性组(P<0.01),而女性组ESR、OD明显比男性组高(P<0.01),血液粘弹性指标η′、η″、G′和λ值男性组均高于女性组(P<0.01).作者并对男女两组间的这些差异进行了讨论。 相似文献
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With the Low Shear 30 rheometer and its accessory instruments, four torque decay curves of whole human blood from a healthy young man were recorded at shear rate 1.285, 1.747, 2.37 and 3.23 s-1 respectively for pretesting. The modified Levenberg-Marquardt non-linear parameter estimating method was used to calculate the thixotropic parameters by following Huang's equation. The results showed that the thixotropic properties of whole human blood could be measured by recording two torque decay curves. This approach is much easier than Huang's method. We have adopted it to measure the thixotropic properties of whole blood from healthy young men (n = 32) and young women (n = 32). The results were comparable to those in Huang's reports of 1976. The coefficients of variations of most parameters in our measurement were less than those in Huang's reports. Meanwhile, we analysed the advantage in using the new method and made some suggestions to improve the measurement accuracy in human blood thixotropy. 相似文献
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作者采用Low shear—30流变测定仪研究不同的血浆浓度对血液粘弹特性和高、中、低剪切率下表观粘度的影响,发现血浆任氏液的粘度与血浆浓度之间存在着线性关系。当血浆浓度降低至60%以下,在高、中、低三种剪切率下的表观粘度降低十分明显,而以低剪切率下的表观粘度下降的百分率最高。红细胞聚集指数在血浆浓度降低到40%以下才有明显降低。血浆浓度降低到60%以下时,血标本复粘度的粘性分量和弹性分量有很明显的降低。作者并讨论了这种降低的物理意义。本研究为临床上应用血浆去除疗法提供理论依据。 相似文献
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本文报道采用Low Shear-30流变测定仪,据Huang氏方程,用改良法测定了92例脑血管疾病患者的全血触变参数。实验结果表明,在脑动脉硬化、短暂性脑缺血发作和脑血栓形成三种疾病中,血液的屈服应力,粘度的非牛顿分量,表观粘度(2.37s~(-1)),结构参数平衡值明显增高;而红细胞压积,粘度的牛顿分量,红细胞叠连解聚反应的表观速率常数变化不明显。在相同年龄范围内,比较这三种疾病间的触变参数,无明显变化,说明在脑血栓形成以前,脑动脉硬化和短暂性缺血发作的患者已有血液流变学异常,提示在缺血性中风的发生过程,血液流变学的变化并非是触发因素,可能是辅助、促成因素。 相似文献
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为研究血液流变学在急性出血性坏死性胰腺炎(AHNP)发病机理中的作用,将44条杂种狗分成5组。第Ⅰ、Ⅱ组分别为手术对照组和急性间质性胰胰炎组(两组各有8条狗)。第Ⅲ、Ⅳ、Ⅴ组狗的主管内注入牛磺胆酸钠溶液形成实验性急性出血性坏死性胰腺炎。而第Ⅳ、Ⅴ组分别用低分子右旋糖酐40(DX40)和丹参溶液静脉注入作为治疗。在所有5组中动脉血压和中心静脉压于手术前后均未见显著性改变。第Ⅲ、Ⅳ、Ⅴ组的血清淀粉酶和脂肪酶水平在实验性AHNP形成后明显增高。但在第Ⅳ、Ⅴ组用药物治疗后,此两酶水平迅速降低。用Low Shear-30流变测定仪测定血液流变学改变。所有5组血浆粘度在手术前、后无明显变化。第Ⅰ、Ⅱ组狗全血的红细胞压积(HCT),在0.512秒~(-1)和51.2秒~(-1)下的表观粘度(η0.512,η51.2),红细胞聚集指数(AI),复粘度的粘性分量(η′)和弹性分量(η″)、以及弹性模量(G′)在手术前后均无明显改变。然而,上述这些参数在实验性AHNP形成后的第Ⅲ、Ⅳ、Ⅴ组有明显增高。但在第Ⅳ和Ⅴ组用药物治疗后,这些参数持续下降;而且,第Ⅴ组丹参溶液比第Ⅳ组的DX40对于血液流变学改变有更好的改善作用。结果证明血液流变学异常是AHNP时引起胰腺微循环障碍的重要因素,并且血液流变学异常的纠正能改善出血性坏死性胰腺炎的症状。 相似文献
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