From 1985 to 1987 Nailfold microcirculation was detected in 60 cases of HFRS for 164 times, and were comprehen- sively evaluated. The results showed that the changes of the capillary loop form were the main feature in febrile phase, ∑(A×B) was 3. 15. The capillary loop form, fluidity and the condition around the loops all changed obviously in hypotensive phase ∑(A×B)was 5. 49. The capillary loop form and the condition around the loops also changed obviously ,∑ (A×B) was 4. 73. The fluidity of blood, however, was improved. ,The microcirculation in most of the patients in diuresis phase had recorded, except severe and fatal cases, ∑(A×B) was 3. 83. Analysing ∑(A×B), we considered that there were striking differences among mild, moderate and severe cases (P<0. 05). There was no striking differences between severe and fatal cases(P>0. 05). Nailfold microcirculation can reflect the human body microcirculation function in a certain de- gree. The clinical significances detecting it are: (1) It may be regarded as a reference item for early diagnosis and for determing a degree when the patients are admitted, (2)It may be a supervise measure in hypotensive phase, (3)It may be a reference item for supervising DIC and for anticoagulant treatment. (4) The dynamic changes of nailfold microcirculation may be a reference item for conjecturing prognosis, The quantitative analysis of nailfold microcirculation by∑ (A× B) can reflect 15 items for the changes of human body microcirculation. It can provide the reliable information for guiding the treat -ment arid conjecturing prognosis in HFRS,
In the blood there are charged RBC, WBC, PLT, inorganic ions, so that there must be sensitive and complicated responsed of hemorheological properties under applied magnetic field. An experiment of constant magnetic field on apparent hemorheological viscosity was carried out. When the magnetic intensity was at 0.7T ,below the constant magnetic field, there is a decrease in apparent blood viscosy- ty, esp. the marked decrease in the whole blood and reductive viscosity under low shear[1]. Based on the above-mentioned experiment, another experiment was done. Indexed of hemorheological proper- ty under strong pulse magnetic field at an intensity of 1 - 2T are checked and compared with that un- der no magnetic field. The result showed a decrease in apparent blood viscosity under different shears of intensive pulse magnetic field, but the responsive sensibility of different individuals is different and also the best magnetic induction intensity affecting hemorheological property is different. It is closely related to the original sample blood of henorheological property. It suggests, when the pulse magnetic intensity is at 1 - 2T, hemorheological property may be improved and attention must be paid to the specificity of sensibility and responsive intensity of the individuals. When the pulse magnetic field is employed clinically, attention should be paid to the original different hemprheological property and to see whether the intensity is suitable and try to select the best one for the individuals respectively.
