Voluntary blood donation can help endangered patients save their lives, but there are still many misunderstandings and rumors about blood donation around us, which hinders people’s enthusiasm for donating blood and love. Today, blood transfusion experts have sorted out the misunderstandings and common questions about blood donation, hoping that more and more people can correctly grasp the common sense of blood donation, dispel doubts and actively participate in voluntary blood donation. Everyone participates in voluntary blood donation, and everyone benefits from a harmonious society.
Myth: Blood donation can cause blood pressure instability.
Blood donation can’t cause blood pressure instability. There are many factors leading to blood pressure instability: irregular life, unreasonable diet, excessive smoking and drinking, disease and other reasons can lead to blood pressure instability.
According to the Requirements for Health Examination of Blood Donors, hypertension was clearly listed as the range of blood donation, and the blood pressure of blood donors was within the normal range, that is, 12.0 kPa (90 mmHg) ≤ systolic blood pressure < 18.7 kPa (140 mmHg); 8.0 kPa (60 mmHg) ≤ diastolic blood pressure < 12.0 kPa (90 mmHg); pulse pressure difference: ≥ 30 mmHg/4.0 kPa. Before each blood donation, the staff will measure the blood pressure of each blood donor.
Individual blood donors will have unstable blood pressure after blood donation, mostly due to the tension of blood donation, emotional fluctuations are too large, will cause unstable blood pressure. If blood pressure is unstable, we should pay attention to rest, maintain emotional stability, blood pressure will soon return to normal, will not cause pathological hypertension or hypotension. Blood donation is not recommended for patients who take antihypertensive drugs for a long time, mainly because although blood pressure may be controlled within the prescribed range of blood donation, blood donation may affect the donors themselves and the patients who receive blood.
Myth: Blood donation makes people fat
. Blood donation has nothing to do with getting fat. Normal blood donation of 200-400 ml, the blood stored in the liver and spleen will be mobilized, and the blood will soon be replenished, so blood donation has little effect on human blood volume. After blood donation, the human body will replenish new red blood cells, white blood cells and other blood components, but will not produce fat. It can be seen that blood donation has nothing to do with obesity. There are many factors
affecting human obesity, such as heredity, hormones, metabolic balance, etc. In fact, the increase or decrease of weight depends on the difference between calorie intake and calorie consumption. A common figure is that when you eat 3500 calories more than you burn, you gain 1 pound (about 453 grams), which shows that blood donation does not lead to obesity. The main reason why
some people become fat after blood donation is that they are worried about hurting their health after blood donation. They often supplement nutrition through diet, which leads to excessive calorie intake in a short time. In addition, the amount of activity and lack of exercise make it difficult to consume these increased calories, which will accumulate in the form of fat, leading to obesity. This is the essential reason for becoming fat after blood donation.
In fact, after blood donation, we only need to have a normal diet and maintain a balanced dietary structure. We can meet the needs of hematopoiesis without additional nutrition. We must not blindly supplement, so as to avoid weight gain and adverse effects on the human body caused by the increase of blood sugar, blood lipids and other indicators.
Myth: Blood donation will reduce immunity
. Blood donation will not reduce human immunity. Immunity is the body’s own defense mechanism, the ability of the human body to identify and eliminate any foreign body (viruses, bacteria, etc.), to deal with aging, damage, death, degeneration of its own cells, as well as to identify and deal with mutant cells and virus-infected cells in the body, and the physiological response of the human body to identify and eliminate “alien”. Cells in the
human body will die naturally every day, even if they do not donate blood, they will be discharged with the metabolism of the human body, and do not reduce the immunity of the human body. Proper blood donation will reduce the number of blood cells in the human body and stimulate the hematopoietic function of the human body, thus effectively improving the blood environment of the human body and promoting health.
Causes the human body immunity low reason to have the following several kinds: factors and so on age, environment, family, psychology, nutrition. Blood donation only draws blood from peripheral blood vessels, and the human body will automatically release the blood stored in the viscera into the blood vessels to maintain a constant blood volume, so blood donation will not reduce the body’s immunity.
We can improve immunity through balanced diet, adequate sleep, moderate exercise and emotional control, so after blood donation, we need to pay more attention to rest, avoid overwork, and avoid staying up late, so as not to affect the recovery of the body.
Myth: You can’t donate blood
after COVID-19 infection. Novel coronavirus is a respiratory virus and cannot be transmitted by blood transfusion.
So far, there is no report of novel coronavirus transmission through blood transfusion in the world. Blood stations will strictly implement the management system of blood collection and supply to ensure that infected people recover and donate blood after a period of health observation. Therefore, blood donated by donors who have been infected with COVID-19 is safe.
For asymptomatic, mild and common infections with COVID-19, blood can be donated one week after the complete disappearance of symptoms of infection in the upper respiratory tract, such as fever, cough and sore throat, and 7 days after the last positive nucleic acid or antigen test.
If it is a severe or critical infection, it needs to recover for 6 months before blood donation.
This standard is consistent with the international requirements for delayed blood donation after novel coronavirus infection, as well as the current requirements for delayed blood donation after respiratory tract infection and pulmonary infection, and will not cause harm to the health of blood donors. Attention should be paid to
the following conditions:
1. Vaccination of nasal spray of novel coronavirus vaccine (influenza virus vector) requires blood donation at least 4 weeks after vaccination.
2. Vaccination of adenovirus vector novel coronavirus vaccine requires 2 weeks after vaccination and no discomfort symptoms before blood donation.
3. Vaccination of inactivated vaccines or recombinant DNA or mRNA vaccines can be delayed for only 48 hours without symptoms of discomfort.
4. If the vaccine is a recombinant novel coronavirus vaccine, which is the same as the adenovirus-mediated novel coronavirus vaccine, it is necessary to donate blood after 2 weeks of vaccination without symptoms of discomfort.
1. Oral care (including scaling) is less than three days
old. 2. Tooth extraction or other minor surgery is less than half a month old.
3. Women’s menstrual period is three days before and after 0 HTML 0UN K314. Pregnancy or abortion less than six months 0 HTML0 UNK3 25. Delivery and lactation less than one year 0 HTML0 UNK3 36. Upper respiratory tract infection less than one week, one week after recovery of influenza disease 0 HTML0 UNK3 47. Pneumonia less than three months 0 HTML0 UNK3 58. Acute gastroenteritis less than one week after recovery. 0 HTML 0 UNK3 69. Acute urinary tract infection less than one month, acute pyelonephritis less than three months, urinary stone attack 0 HTML 0 UNK3 710. Active or progressive ophthalmic disease less than one week. Less than three months after ophthalmic surgery 0 HTML 0 UNK3 811. Less than one week after wound healing, less than one week after skin localized inflammation healing, Extensive skin inflammation healed less than two weeks 0 HTML 0 UNK3 9 12. Tattoo less than one year 0 HTML 0 UNK4 0 13. Benign tumors: gynecological and body surface benign tumors less than one year after surgery 0 HTML 0 UNK4 1 Wen/Sun Yong (Beijing Chest Hospital) 0 HTML 0 UNK4 2
