Monday, June 22, 2020

What does blood color change indicate?

The related literature mentions that the color of blood is usually the following:

1. Light red, suggesting that the human hemoglobin is lower than normal and anemia occurs. Normal men's hemoglobin concentration is between 120g/L-160g/L, and women's is between 110g/L-150g/L. Below this standard, it is anemia.

When donating blood, the hemoglobin concentration of men is required to be 120g/L, and that of women is 115g/L, which is not allowed to donate blood below this standard. The lower the hemoglobin content, the heavier the anemia, and the color will change from bright red to light red. Common patients are also accompanied by manifestations of pale face, paleness, pale lips, fatigue, fatigue, etc., such as iron deficiency anemia, aplastic anemia and other blood system diseases.

2. Dark red. The normal venous blood mentioned above is dark red. If arterial blood is also dark red, it is usually manifested as hypoxia.

The blood receives more carbon dioxide than the oxygen content. As the degree of hypoxia increases, the blood color becomes darker and darker. Patients with emphysema and pulmonary heart disease are commonly seen. In addition, gas poisoning also has this manifestation, because people with gas poisoning, their hemoglobin and carbon monoxide combine to form oxyhemoglobin, and lose the ability to carry oxygen and cause the body to lack oxygen.

3. Milky white, the blood is milky white and filthy. It usually means that the amount of fat and protein in the blood is too high. It is also called chyle blood in clinic.

It is usually seen in patients with fatty liver and high blood fat, such as fatty foods such as fatty meat, eggs, and milk, or diabetes or arteriosclerosis. In clinical treatment, we have seen blood samples of patients with blood drawn immediately after transfusion of fat milk. After centrifugation, the supernatant of the blood sample was chylous. Interfering with the relevant clinical testing, usually let the patient re-take blood samples for metabolism after 2-4 hours of fat particle metabolism.

4. Dark purple, generally such a situation, indicating that the patient has severe emphysema, pulmonary heart disease or cyanotic congenital heart disease, etc., the content of oxygen and hemoglobin in the blood is reduced, and the reduced hemoglobin is increased to 100 ml of blood At more than 5 grams, the blood appears dark purple.

5. Brown or black, suggesting that marinated meat products with high nitrate or nitrite content, pickles and spoiled vegetables may cause nitrite poisoning.

Because nitrite is a strong oxidant, it can oxidize the ferric iron in hemoglobin to ferric iron, so that it loses its oxygen-carrying effect and causes tissue hypoxia.

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