Hemoglobin Concentration (HGB)

Hemoglobin concentration (HGB) refers to the amount of hemoglobin contained in the blood (L) in the unit. Hemoglobin, also known as hemoglobin, is a major component of red blood cells that binds oxygen and transports oxygen and carbon dioxide. Pathologically increased in severe congenital and acquired cardiopulmonary disorders and vascular malformations, such as tetralogy of Fallot, cyanotic congenital heart disease, obstructive emphysema, pulmonary heart disease, pulmonary or pulmonary venous fistula, and oxygen carrying Abnormally abnormal hemoglobinopathy, etc.; also seen in certain tumor or kidney diseases, such as kidney cancer, hepatocellular carcinoma, renal embryonal tumor and hydronephrosis, polycystic kidney disease. Basic Information Specialist classification: growth and development examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Found in aplastic anemia. Normal value: Male: 120-160g/Lg/L Female: 110-150g/Lg/L Newborn: 170-200g/Lg/L Above normal: Increased in severe congenital and acquired cardiopulmonary disorders. negative: Positive: Tips: After 8 pm on the day before the medical examination, you should fast, so as not to affect the detection of indicators such as blood glucose in the second sky. Normal value Male 120 ~ 160g / L (12.0-16.0g / dl). Female 110 ~ 150g / L (11.0-15.0g / dl). Newborns 170 ~ 200g / L (18.0-19.0g / dl). Clinical significance The clinical significance of hemoglobin increase and decrease is basically similar to the clinical significance of red blood cell count, but hemoglobin can better reflect the degree of anemia. The increase in hemoglobin is as follows (1) Physiological increase is seen in plateau residents, fetuses and newborns, strenuous activities, fear, cold water baths, etc. (2) pathological increase seen in severe congenital and acquired cardiopulmonary disorders and vascular malformations, such as tetralogy of Fallot, cyanotic congenital heart disease, obstructive emphysema, pulmonary heart disease, pulmonary artery or pulmonary venous fistula And abnormal hemoglobin disease with low oxygen carrying capacity. Also seen in certain tumor or kidney diseases, such as kidney cancer, hepatocellular carcinoma, renal embryonal tumor and hydronephrosis, polycystic kidney disease. Hemoglobin reduction is seen in the following cases (1) Children who are physiologically reduced from 3 months to 15 years old are mainly due to the relative lack of hematopoiesis in the hematopoietic system due to rapid growth and development, which is generally 10%-20% lower than that of normal people. In the second and third trimesters, blood is diluted due to increased blood volume in pregnancy, and the elderly's hematopoietic function is gradually reduced, which may lead to a decrease in red blood cells and hemoglobin. (2) pathological reduction A. Bone marrow hematopoietic failure, such as aplastic anemia, anemia associated with myelofibrosis. B. Anemia caused by lack of hematopoietic material or utilization of disorders, such as iron deficiency anemia, folic acid and vitamin B12 deficiency caused by megaloblastic anemia. C. Anemia caused by excessive red blood cell destruction caused by erythrocyte membrane, genetic hereditary defects or external factors, such as hereditary spherocytosis, marine anemia, paroxysmal nocturnal hemoglobinuria, abnormal hemoglobinopathy, immunity Hemolytic hemolytic anemia, major surgery for cardiopulmonary bypass, or hemolytic anemia caused by certain biological and chemical factors, and anemia caused by some acute or chronic blood loss. Low results may be diseases: high nutritional anemia results may be diseases: congenital heart disease considerations First, the precautions before blood draw 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the physical examination, fasting should be done to avoid affecting the detection of indicators such as blood glucose in the second sky. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. Second, should pay attention after blood draw 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. Inspection process Red blood cell examination. Not suitable for the crowd A patient with hemophilia and severe clotting factor deficiency. Adverse reactions and risks Risk of infection: If you use an unclean needle, you may be at risk of infection.