犬脾切除对阻断冠脉后血液流变学变化的影响

本实验旨在观察切除脾脏对犬心肌缺血时血液流变学变化的影响。结果表明,切除脾脏后,阻断冠脉血流120min内血细胞比容与高切变率下全血粘度升高程度明显减轻;心肌缺血40min和80min时低切变率下全血粘度升高程度减轻;但对心肌缺血120min时低切变率下全血粘度变化及血浆纤维蛋白原浓度、血浆粘度变化均无明显影响。     

PROGRESS IN BLOOD PRESERVATION

Disodium ethylenediamine tetraacetate (Na₂EDTA) is a powerful anticoagulant for blood. It preserves the cellular elements of the blood better than the anticoagulants commonly used. It is practically atoxic and almost completely excreted.Blood preserved with the disodium ethylenediamine tetraacetate is useful for transfusion after storage of three to four weeks. The addition of glucose and raffinose increases the survival time of the erythrocytes for from four to six weeks.The disodium calcium complex may be used for the preservation of whole blood. It is completely atoxic.Ethyl alcohol-saline-sugar solutions preserve erythrocytes for at least 150 days; they are excellent preservatives for the agglutinogens.Whole blood preserved with glycerin-raffinose-glucose may be frozen at —20° C. for at least two months, and probably for a longer period, without excessive hemolysis after thawing.