Can anemic people donate blood?

Written by Li Fang Fang

Hematology

Updated on September 09, 2024

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Patients with anemia cannot donate blood. After donating blood, due to the reduction of blood volume, it may worsen anemia and cause symptoms such as dizziness, excessive sweating, nausea, vomiting, and other manifestations of low blood pressure. In severe cases, it can even induce acute cardiovascular and cerebrovascular accidents, so patients with anemia cannot donate blood. Clinically, the requirements for blood donors include not being anemic, weighing more than 45 kilograms, and being free of infectious diseases.

Other Voices

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Written by Li Fang Fang

Hematology

45sec

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Anemia lacks what element

Anemia is not always caused by a deficiency in elements. In cases of iron deficiency anemia, it is due to a lack of iron. Megaloblastic anemia occurs because of a deficiency in folate or vitamin B12. However, clinically, there are many other types of anemia, such as aplastic anemia, hemolytic anemia, myelodysplastic syndromes, leukemia, etc. The anemia caused by these diseases is not due to a deficiency in elements, but is due to the diseases themselves affecting bone marrow hematopoiesis, leading to anemia. Therefore, it is necessary to clearly diagnose the cause of anemia in order to treat it effectively.

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Written by Zhao Li Li

Obstetrics

43sec

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How should pregnant women supplement for anemia?

Under normal circumstances, if anemia symptoms are confirmed after pregnancy, further examination is still necessary for active symptomatic treatment. Normally, the specific cause of the anemia can be identified, whether it is due to iron deficiency, folate deficiency, or B12 deficiency. According to the specific cause of anemia, oral medication can be administered for symptomatic treatment, which can effectively alleviate the symptoms. After taking oral medication, it is also necessary to regularly check the rise in hemoglobin levels to properly manage the condition.

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Written by Li Fang Fang

Hematology

49sec

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Can anemia cause fever?

Patients with severe anemia may exhibit low-grade fever due to the severity of the anemia, where the fever generally does not exceed 38 degrees Celsius, mostly hovering around 37.5 degrees Celsius. Besides, if a patient with anemia develops high fever above 38 degrees Celsius, even reaching around 39 degrees Celsius, it is crucial to be vigilant about a possible secondary infection due to poor resistance from anemia. It is important to actively search for the source of infection, complete tests such as inflammatory markers, CT scans, and ultrasound imaging, and, once an infectious fever is suspected, to initiate aggressive anti-infection treatment.

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Written by Liu Wei Jie

Obstetrics

45sec

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The hazards of anemia in pregnant women

Firstly, the occurrence of anemia during pregnancy is very common, and most cases are mild anemia, but a small proportion can be severe. The harm of anemia comes from two aspects: one is that it is harmful to the fetus, as anemia during pregnancy can affect the intellectual development of the fetus, which is very clear. Another harm comes from the mother, such as the possibility of postpartum hemorrhage or infection. If a cesarean section is performed, our hemoglobin must not be lower than 80 grams. If it is below 80 grams, a blood transfusion or intraoperative blood preparation is needed.

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Written by Li Fang Fang

Hematology

1min 5sec

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Can anemia cause tinnitus?

Anemia can cause tinnitus. When anemia is severe, various organs of the body are in a state of ischemia and hypoxia. The nervous system can exhibit symptoms such as dizziness, headaches, and a feeling of heaviness in the head, as well as tinnitus. At this point, infusing red blood cells to correct the anemia can alleviate symptoms like tinnitus. It is also important to actively seek the underlying causes of the anemia. Anemia can be categorized based on the size of red blood cells into microcytic hypochromic anemia, normocytic anemia, and macrocytic anemia. Microcytic hypochromic anemia is commonly seen in chronic disease anemia and iron deficiency anemia, normocytic anemia is commonly found in conditions such as leukemia, multiple myeloma, and acute blood loss anemia, while macrocytic anemia is typical in megaloblastic anemia and myelodysplastic syndromes.