Why do medical staff let blood donors drink milk or sugar water after donating blood?

Why do medical staff let blood donors drink milk or sugar water after donating blood?

In daily life, do you know why medical staff let blood donors drink milk or sugar water after donating blood? Let's talk about it together

The total blood volume of healthy people accounts for about 8% of body weight, and the total blood volume is 4800 ml according to 60 kg body weight. The amount of whole blood donated at a time is generally 200 ml or 400 ml, that is to say, if 200 ml is donated, which is equivalent to a quarter of the whole body blood volume, less than 5%, it is actually a very small amount. After donating blood, the stored blood will be replenished immediately without reducing the circulating blood volume. Water and inorganic substances lost after blood donation will be replenished within 1 ~ 2 hours; Plasma protein, synthesized by liver, can be supplemented in a day or two; Platelets, white blood cells and red blood cells also quickly recovered to their original levels. In fact, the hematopoietic function will be strengthened after blood donation, and the lost blood cells will be replenished soon.

People who have just donated blood should avoid eating food digested by the body. Foods containing a lot of oil usually fall into this category. Oily foods also tend to contain more calories than other foods, so eating a lot of food will increase the chance of being overweight. A person who eats greasy food instead of healthy food may even suffer from malnutrition because he doesn't get the vitamins and minerals he needs. Take a rest after donating blood. Don't get up in a hurry. Press the puncture site with three fingers of a cotton ball. No rubbing is allowed after 5 ~ 10 minutes without bleeding. Individual blood donors may have cyanosis at the puncture site due to incorrect pressing and other reasons. This is because there is a small amount of blood oozing under the skin. Local cold compress can be applied within 24 hours, and hot compress can be applied after 24 hours if necessary to promote regression. According to the cyanosis range, it can gradually subside in a week or so.

Individual blood donors may have cyanosis at the puncture site due to incorrect pressing and other reasons. This is because there is a small amount of blood oozing under the skin. Local cold compress can be applied within 24 hours, and hot compress can be applied after 24 hours if necessary to promote regression. According to the cyanosis range, it can gradually subside in a week or so. After blood donation, there is generally no need to supplement special nutrition. Drink plenty of water to replenish lost water and maintain a normal diet. Eat lean meat, eggs, pork liver, bean products and other foods with high protein content. You can also eat some fresh vegetables, such as Chinese cabbage, spinach and celery. Don't take tonics, let alone eat, drink and drink, so as not to affect your health. Just pay attention to the normal collocation of diet and nutrition. People who have just donated blood should focus on simple carbohydrates in fruits, such as bananas, cherries, grapes, mangoes and oranges. On the contrary, they should avoid any food that contains a lot of fat or protein, because it takes more time and energy to digest these foods.

Blood donors should especially avoid drinking coffee and tea, because they contain polyphenols, which will combine with iron during digestion, thus preventing the body from absorbing them. It is found that black tea can inhibit the absorption of iron by 94%, while it can inhibit the absorption of iron by 7 1%. The stronger the drink, the less iron the body absorbs. Caffeine is also a diuretic, so it will cause the body to lose water. Some people think that after donating blood, there are many more nutrients in their bodies. At this time, in order to supplement blood, they will start to supplement their bodies with big fish and meat, but such behavior is not desirable. Pay attention to healthy diet after blood donation, supplement some high-protein substances such as meat, eggs and milk, and eat more fresh fruits and vegetables.

Do you understand everything after the above general description?