What Is the Normal Size of Red Blood Cells?
Diameter: 6-9 m.
- The size of normal red blood cells is basically the same, with a diameter of about 6-9 m. During various anemias, the size of red blood cells can change, and uneven red blood cell sizes appear. Those with a red blood cell diameter greater than 10 m are called large red blood cells; those with a diameter greater than 15 m are called giant red blood cells; those with less than 6 m are called small red blood cells.
- Name
- Abnormal red blood cell size
- category
- blood
Abnormal red blood cell size
- Diameter: 6-9 m.
Clinical significance of abnormal red blood cell size
- Abnormal results: (1) Small red blood cell diameter <6m: iron deficiency anemia, subacute or chronic inflammation, thalassemia, iron granulocyte anemia. (2) Large red blood cell diameter> 10m: trophic megaloblastic anemia, megaloblastic anemia during pregnancy, malignant anemia, liver disease, red leukemia, post-gastrectomy, certain hemolytic anemia, aplastic anemia. (3) The diameter of giant red blood cells> 15m, and the diameter of ultra giant red blood cells> 20m: giant juvenile red blood cell anemia, malignant anemia. (4) Different sizes: megaloblastic anemia, iron deficiency anemia, thalassemia, hemolytic anemia, bone marrow fibrosis. People to be checked: People with symptoms of anemia.
Precautions for abnormal red blood cell size
- Before the test: (1) Do not eat too greasy, high-protein food the day before blood drawing, and avoid heavy alcohol consumption. The alcohol content in the blood directly affects the test results. (2) After 8 pm the day before the physical examination, fasting should be started for 12 hours to avoid affecting the test results. (3) When drawing blood, you should relax and avoid the constriction of blood vessels caused by fear and increase the difficulty of blood collection. After the examination: (1) After the blood is drawn, it is necessary to perform local compression on the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, as it may cause subcutaneous hematoma. (2) The pressing time should be sufficient. The coagulation time varies from person to person, and some people take a little longer to coagulate. Therefore, when the surface layer of the skin does not seem to bleed, the compression will be stopped immediately, which may cause the blood to penetrate the skin and cause bruising due to incomplete hemostasis. Therefore, pressing for a long time can completely stop bleeding. If there is bleeding tendency, the compression time should be extended. (3) Symptoms of dizziness such as dizziness, dizziness, fatigue, etc. should be caused by lying down and drinking a small amount of sugar and water immediately after the blood draw. (4) If congestion occurs locally, a wet towel after 24 hours can promote absorption.
Examination of abnormal red blood cell size
- Examination process: Blood is drawn. Blood sampling is generally performed with venous blood, which is drawn by a doctor or nurse. The amount of blood drawn depends on the content of the test and the number of items. The amount of blood drawn is generally 2-20 ml, and the maximum is not more than 50 ml. Then the red blood cell size is observed by a doctor with a microscope.
Diseases related to abnormal red blood cell size
- Hereditary angioblastic anemia, hemolytic anemia caused by high temperature, drug-related immune hemolytic anemia, cold antibody autoimmune hemolytic anemia, myelopathic anemia, pediatric pure red cell aplastic anemia, pregnancy combined Aplastic anemia, thalassemia, anemia
Symptoms related to abnormal red blood cell size
- Cervical headache, shortness of breath after activity, sudden left heart failure, sudden right heart failure, right heart failure, left heart failure, headache