儿童贫血全英文.ppt

文档介绍：儿童贫血全英文
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Disease of hematopoietic system
infantile anemia
（1）nutritional it 65% at birth, but the later lymphocyte contrary to neutrophile granulocyte decreases.
The proportion between lymphocyte and granulocyte is equal at 4～6 days after birth..
White blood cell(WBC)
Lymphocyte is about 60% and granulocyte is about 35% subsequently .
They are equal at 4~6 years.
After 7 years white cell classification in infants is similar to that in adult.
4-6 Days
Granulocyte
Lymphocyte
4-6 years
Change of proportion in Lymphocyte and Granulocyte
Platelet count
Normal value for the platelet count are about 150~250×109/L and vary little with age.
Blood volume
Blood volume in infants is more than in adults.
The newborn’s blood volume is 10% of his weight and about 300ml on average.
A child’s is about 8%~10% of his weight.
Anemia
Defination :
Anemia is defined as a reduction of the red blood cell volume or hemoglobin concentration below the range of values occurring in healthy persons.
Anemia is an absolute decrease in hematocrit , hemoglobin concentration, or the RBC count.  Anemia is not a diagnosis, but a sign of underlying disease.
The criteria of anemia
Age
Hb concentration
< 28 days
< 145 g/L
1～4 months
< 90 g/L
4～6 months
< 100g/L
6 months～6 years
< 110g/L
6～14 years
< 120g/L
Anemia
1.       Classification
1）  degree : mild moderate severe Very severe
2） Morphology of RBC
3）Causes: lost blood , hemolytic , deficiency of forming Hb and RBC
degree
RBC (van /mm3 ) Hb (g/L)
Mild 300-400 90-110
Moderate 200-300 60-90
Severe 100-200 30-60
Very severe <100 <30
Morphology
anemia with microcytosis and hypochromia
Anemia with macrocytosis
Anemia with normalcytosis Anemia
More anemia
MCV MCH MCHC
Normal 80-94 28-32 32-38
Micro