Causes of Anemia in Late Pregnancy

Written by Yue Hua
Obstetrics and Gynecology
Updated on September 08, 2024
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Anemia can be categorized into several different types, each caused by different reasons. Iron-deficiency anemia occurs in late pregnancy when the intake or absorption of iron by pregnant women is insufficient. Megaloblastic anemia is caused by a deficiency of folate or vitamin B12 in the patient's body. Additionally, there is thalassemia, which is caused by a genetic deficiency in the patient, leading to anemia in the fetus as well. Another type is aplastic anemia, which is caused by abnormal bone marrow hematopoietic function leading to anemia.

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Symptoms of anemia

Patients with anemia are prone to symptoms like fatigue, tiredness, and dizziness. Generally, anemia is caused by a disorder in blood production. The most typical symptoms of anemia can include dizziness, ringing in the ears, hearing loss, and pale complexion. It is advised that patients with severe symptoms should visit a formal hospital promptly and undergo targeted treatment according to medical guidance. It is recommended to drink plenty of water and engage in physical exercise regularly to boost the body's immunity. Dietarily, it is advisable to avoid spicy, stimulating, and cold foods to prevent aggravating the condition. It is also recommended to avoid staying up late and sitting for long periods.

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Symptoms of low blood pressure and anemia

Main clinical symptoms of low blood pressure and anemia: general fatigue, pale complexion, heart palpitations and shortness of breath, cerebral ischemia causing dizziness and vertigo, insomnia and frequent dreams; some patients may also experience loss of appetite, indigestion, and other symptoms. Low blood pressure and anemia are not the same disease, and their clinical treatments differ. Low blood pressure is caused by excessively low blood pressure leading to ischemia above the brain, and the treatment should aim to increase blood volume and elevate blood pressure. Anemia is caused by a reduction in hemoglobin, leading to ischemia and hypoxia in the body, and treatment should involve supplementation of nutrients and the essential trace elements that are lacking, which should be treated seriously.

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What indicators are used to diagnose anemia?

To determine if someone is anemic, we should look at the red blood cell count and hemoglobin level in a complete blood count. Currently, hemoglobin level is the commonly used indicator clinically. Normal hemoglobin levels are 110~150g/L for women and 120~160g/L for men. Anemia is diagnosed when the hemoglobin level falls below the normal range. Based on the amount of hemoglobin, anemia can be classified into very severe, severe, moderate, or mild. Hemoglobin levels above 90g/L indicate mild anemia, levels between 60~90g/L indicate moderate anemia, levels between 30~60g/L indicate severe anemia, and levels below 30g/L indicate very severe anemia.

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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.

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Can anemic people donate blood?

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.