It is a colorless or white crystalline powder that is odorless and has a refreshing salty taste, and forms an insoluble salt with calcium. This is used to capture calcium in the blood, which is necessary for blood clotting, and is used as an anticoagulant. It is used as a 3.8% solution for erythrocyte sedimentation (take 0.4 ml, make a total of 2.0 ml of blood) and as a 10% solution for blood transfusions (8-14 ml, make a total of 200 ml of blood). In the case of blood transfusions, it is diluted in the body, so there is no problem. At 1.5-10%, it inhibits blood clotting, but at 30%, it has the opposite effect of clotting. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
無色あるいは白色の結晶性粉末で,無臭,清涼な塩味があり,カルシウムと不溶性の塩をつくる。これを利用して血液凝固に必要な血液中のカルシウムを捕え,抗凝固剤として用いる。血沈用の 3.8%溶液 (0.4ml取り,血液で総量 2.0mlとする) ,輸血用の 10%溶液 (8~14mlに対し血液で総量 200mlとする) として用いられる。輸血の場合は体内で希釈されるので問題はない。 1.5~10%では血液凝固を阻止するが,30%では反対に凝固作用を示す。
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