Polycythemia

Polycythemia is characterized by the number of red blood cells, hemoglobin, hematocrit, and total blood volume significantly exceeding normal levels. Childhood hemoglobin exceeds 180g / L (16g / dl), hematocrit is greater than 55%, and the absolute value of red blood cell volume per kilogram of body weight exceeds 35ml, excluding the increase of relative red blood cells due to blood concentration caused by acute dehydration or burns, etc. You can diagnose. The disease can be divided into two categories, primary and secondary. Primary is erythrocytosis; secondary is mainly caused by tissue hypoxia.

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