Anemia refers to the symptoms caused by the concentration of red blood cells or hemoglobin in the peripheral blood of the human body than the normal values.
Some changes or problems during pregnancy can cause red blood cells or hemoglobin concentrations to be lower than normal values.It is more common in the following reasons:
1. During pregnancy, blood capacity expansion causes physiological anemia
During pregnancy, the blood capacity increased rapidly, until 30-34 weeks of pregnancy remained stable, or slightly reduced until the full moon.Over time, the blood capacity of pregnant women may be 30-50%higher than before pregnancy.
Although the number of red blood cells during pregnancy increases accordingly, the degree of increase is less than the increase in blood volume.If the increase in blood capacity is greater than the increase of red blood cells, hemoglobin concentration will decrease, resulting in physiological (diluted) anemia.
2. Insufficient iron intake during pregnancy leads to iron deficiency anemia
Iron can increase the content of hemoglobin. If the body is deficient in the body, the content of hemoglobin will also be reduced and anemia will occur.
The common causes of iron deficiency during pregnancy are as follows:
① Increased demand for iron during pregnancy
Increased blood capacity during pregnancy, increased red blood cells, the synthesis of hemoglobin in red blood cells also requires iron. At the same time, the fetal red blood cell production and fetal placenta growth also need iron.In addition, pregnant mothers also have to store part of the consumption of blood loss and postpartum breastfeeding during childbirth.
Therefore, the demand for iron during pregnancy will increase significantly, so it is easy to cause anemia.
② Insufficient rail intake during diet during pregnancy
If the iron intake in the pregnancy diet is insufficient, it will easily cause anemia.
Especially in the early stages of pregnancy, pregnant mothers often have early pregnancy reactions such as nausea, vomiting, less food, picky eaters, and not eating. This will cause insufficient iron intake, which will affect the synthesis of hemoglobin and may cause anemia.
③ Iron absorption disorders during pregnancy
If the pregnant mother originally had gastrointestinal diseases, or the gastrointestinal tract function was weakened during pregnancy, insufficient gastrointestinal secretion and reduced gastric acid would cause iron absorption difficulties and caused anemia.
Many diseases may also interfere with the normal absorption of dietary iron, such as cerva diarrhea (a diarrhea caused by abnormal sensitivity to wheat flour foods, manifested as poor digestion and absorption of nutrients), atrophic gastritis, pylori infection, obesity surgery, etc.Essence
3. Excessive fertility or short fertility interval time
According to data statistics, the loss of iron loss in a single pregnancy and childbirth is usually about 1,000 mg.Therefore, if there are too many fertility (greater than 5 times) or re -pregnancy (shorter than half a year) in the short term, it may lead to the lack of iron or iron reserves.
4. Other diseases and other factors
:Folic acid deficiency: Folic acid deficiency can also lead to anemia. It is usually related to the low intake of animal protein, fresh polyalistic vegetables and beans in diet.
病 Genetic diseases: such as thalassemia, sickle cell disease, and red blood cell membrane diseases can also cause anemia.
失 Those who have acute or chronic blood loss: If the pregnant mother has acute bleeding before pregnancy, anemia is due to no thorough healing.Or small amounts of bleeding during pregnancy, such as stomach and duodenal ulcers, pyelonephritis, hemorrhoid bleeding, etc., can cause anemia to varying degrees.
疾 Rebellion of genetic diseases: such as thalassemia, sickle cell disease, and red blood cell membrane diseases can also cause anemia.
失 Those who have acute or chronic blood loss: If the pregnant mother has acute bleeding before pregnancy, anemia is due to no thorough healing.Or small amounts of bleeding during pregnancy, such as stomach and duodenal ulcers, pyelonephritis, hemorrhoid bleeding, etc., can cause anemia to varying degrees.
溶 Self -immune hemolysis: For example, systemic lupus erythematosus or acute virus infection related to hemolytic dissolving, causing too much red blood cells, which can lead to anemia.Antimotyic hemolysis: For example, systemic lupus erythematosus or acute virus infection related to hemolytic dissolving, leading to excessive destruction of red blood cells, which can lead to anemia.
退 Thyroid dysfunction and chronic kidney disease: The disease of thyroid dysfunction can reduce the number of red blood cells and have hematopoietic disorders, which causes anemia.At the same time, anemia is very common among people with chronic kidney diseases. Anemia is the basis for many symptoms of renal dysfunction.
