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贫血是指外周血中红细胞及血色素(正常为10克以上)含量减少,病人常表现为皮肤、口唇粘膜、眼结膜及指甲床等处颜色苍白,出现全身无力、头晕目眩等症状。临床上将贫血分为:①缺铁性贫血:因制造血液的原料缺乏,造成红细胞生成减少。②失血性贫血:机体持续少量的失血,如溃疡病、痔疮、肿瘤、妇女月经量过多等。③再生障碍性贫血:造血器官的功能发生障碍,不能产生足够的全血细胞。④溶血性贫血:因饮食、药物等致使红细胞破坏加速所致。
Anemia refers to the peripheral blood erythrocytes and hemoglobin (normal 10 grams or more) decreased, the patient often showed the skin, lips mucosa, conjunctiva and nail bed, etc. pale, appear general weakness, dizziness and other symptoms. Anemia will be divided into clinical: ① iron deficiency anemia: the lack of raw materials for the manufacture of blood, resulting in reduced erythropoiesis. ② Hemorrhagic anemia: the body continued a small amount of blood loss, such as ulcer disease, hemorrhoids, cancer, women, such as excessive menstrual flow. ③ aplastic anemia: dysfunction of hematopoietic organs, can not produce enough whole blood cells. ④ hemolytic anemia: due to diet, drugs, resulting in accelerated destruction of red blood cells caused.