(2) A blood donation is generally 200 ml, with a maximum of 400 ml, and the interval between two collections is not less than 6 months.
(3) After passing the blood donation medical examination, you should participate in blood donation at the prescribed time, so as not to affect the blood use plan of the hospital.
Why can't you drink more water before donating blood?
Because drinking a lot of water will dilute blood, reduce blood quality and affect the treatment of patients.
What should I pay attention to before donating blood?
It is necessary to learn the knowledge of blood donation, understand the common sense of blood donation, and eliminate nervousness. Don't eat greasy food or drink alcohol for two meals before blood donation, but don't eat light food such as steamed bread and vegetables on an empty stomach. And it is best to take a bath or wash your arms.
How to stop bleeding after donating blood?
After pulling out the needle, straighten the forearm, or lift it slightly after straightening, and press the eye of the needle with the index finger and middle finger of the other hand for 5 minutes to stop bleeding. Don't bend your elbow to stop bleeding, because bending your elbow will increase the resistance of blood flowing back to the heart from the venous network of the back of your hand, hinder the blood from flowing back, and overflow from the eye of a needle of a blood vessel, resulting in subcutaneous blood stasis; Don't twist the cotton ball, because it will make the needle hole on the blood vessel stick and be wiped off.
What should normal people pay attention to after donating 200-400 ml blood?
Pay attention to the normal diet and nutrition, properly supplement nutrition, eat lean meat, eggs, milk, bean products, vegetables and fruits, and drink plenty of water that day, but don't overeat.
What's the situation? You can't donate blood for the time being?
(1) Tooth extraction or other minor operations within half a month.
(2) Three days before and after menstruation, less than six months after pregnancy abortion, and less than one year after childbirth and lactation.
(3) Those who have recovered from cold and acute gastroenteritis for less than one week, acute urinary tract infection for less than one month and pneumonia for less than three months.
(4) Some infectious diseases, such as dysentery, typhoid fever, brucellosis and malaria, were cured in less than half a year, one year, two years and three years respectively.
(5) Transfusion of whole blood and blood component in recent five years.
(6) Less than half a year after major surgery and less than three months after appendectomy, hernia repair and tonsillectomy.
(7) Less than one week after local skin inflammation healed, and less than two weeks after extensive skin inflammation healed.
What is the situation that people can't donate blood?
(1) STD, leprosy and AIDS patients and HIV-infected people.
(2) Patients with hepatitis, those who are positive for hepatitis B surface antigen and those who are positive for hepatitis C antibody.
(3) Patients with allergic diseases and repeated allergies, such as frequent measles, bronchial asthma, and drug allergy (blood donation is not allowed when measles is acute).
(4) Patients with various tuberculosis, such as tuberculosis, renal tuberculosis, lymphoid tuberculosis, bone tuberculosis, etc.
(5) Patients with cardiovascular diseases, such as various heart diseases, hypertension, hypotension, myocarditis, thrombophlebitis, etc.
(6) Patients with respiratory diseases, such as chronic bronchitis, emphysema, bronchiectasis with pulmonary insufficiency.
(7) Patients with digestive system and urinary system diseases, such as severe gastric and duodenal ulcer, chronic gastroenteritis, acute and chronic nephritis, chronic urinary tract infection, nephrotic syndrome, chronic pancreatitis, etc.
(8) Patients with hematological diseases, such as anemia, leukemia, polycythemia vera and various bleeding and coagulation diseases.
(9) Patients with endocrine diseases or metabolic disorders, such as pituitary and adrenal diseases, hyperthyroidism, acromegaly, diabetes insipidus, diabetes, etc.
(10) Patients with organic nervous system diseases or mental diseases, such as encephalitis, sequelae of brain trauma, epilepsy, schizophrenia, hysteria, severe neurasthenia, etc.
(1 1) Patients with parasitic diseases and endemic diseases such as kala-azar, schistosomiasis, filariasis, hookworm disease, cysticercosis, paragonimiasis, Keshan disease and Kaschin-Beck disease.
(12) Patients with malignant and benign tumors that affect their health.
(13) Those who have had important internal organs such as stomach, kidney and spleen removed.
(14) Patients with chronic skin diseases, especially infectious, allergic and inflammatory systemic skin diseases, such as chloasma, eczema and psoriasis.
(15) Patients with ocular diseases such as keratitis, iritis, optic neuritis and high myopia with fundus changes.
(16) autoimmune diseases and collagen diseases, such as systemic lupus erythematosus, dermatitis and scleroderma.
(17) People with a history of drug abuse.
(18) Homosexuals and multiple sexual partners.
(19) Patients with other diseases that the physical examination doctor thinks cannot donate blood.
How many days is the validity of the physical examination and testing of blood donors?
The validity period is 2 weeks.
Proper blood donation is good for health.
Studies by hematologists at home and abroad show that after blood donation, a person can feel clear-headed, relaxed and flexible, and enhance his memory because of the appropriate reduction of blood viscosity and specific gravity and the increase of cerebral blood flow. Some people have a great appetite after donating blood, sleep well, feel refreshed and have fewer colds. Long-term adherence to proper blood donation can also effectively reduce the incidence of arteriosclerosis, cerebral infarction, cerebral hemorrhage and myocardial infarction. People who insist on regular and appropriate blood donation always maintain vigorous metabolism and strong immune ability due to the promotion of various organs and bone marrow hematopoietic system in the body. So people who donate blood often have younger blood cells than those who don't donate blood. This quality advantage is very beneficial to human health, which not only delays aging and prolongs life, but also has strong tolerance and self-regulation function in the case of traumatic bleeding.
That's about it.