输血注意事项（Blood transfusion considerations）.doc

输血注意事项（Blood transfusion considerations） Blood transfusion considerations. TXT state of mind determines the state, the heart determines the pattern, the horizon determines the state. When your tears cant help coming out, keep your eyes wide open. Dont blink. You will see the world from clear to blurry. What the blood does: Transport materials; Nutrients, oxygen, metabolites, hormones and drugs that enter the body are delivered through the blood. Buffer effect; In plasma, there are sodium bicarbonate and carbonic acid, sodium disodium phosphate, sodium dihydrogen phosphate, protein, and hemoglobin in red blood cells, which have the effect of buffer acid base. When acidic or alkaline substances enter the blood, the PH value of the blood does not fluctuate significantly through the effect of the buffer. Defensive function; White blood cells in the blood and various immune substances, such as immunoglobulin, complement, antitoxin, and bacteriolytic, have protective effects on the body. Physiological hemostatic function; There are platelets and coagulants in the blood, and when the capillary is damaged, the blood flow will solidify automatically, which can stop the bleeding. Adjustment function; Humoral regulation is achieved through transport hormone. Material exchange function; The plasma forms part of the internal environment of the organism to exchange material. What are the main functions of plasma proteins? Plasma protein is composed of albumin, immunoglobulin and complement, lipoprotein, glycoprotein, metal binding protein and enzyme 1. It has a buffer effect on acid and alkali, and participates in the regulation of acid and alkali balance. 2. Maintain the osmotic pressure of plasma colloid, mainly albumin 3. Immunity; To participate in transport of various substances, such as antibody protein, complement, etc. The transport of bilirubin, lipids, and iron is mainly undertaken by albumin. Blood clotting and anticoagulation; Many coagulant factors are plasma protein