Erythrocytosis: Learning Objectives
Medical Importance
Erythrocytosis, or an increase in hematocrit, can be caused by a variety of disorders. A careful history, physical examination, and a few simple laboratory tests usually point to the correct diagnosis.Objectives
- Describe the pathophysiologic differences between absolute and pseudo- polycythemia (erythrocytosis).
- List the primary and secondary causes of polycythemia.
- Describe the mechanisms for cellular oxygen sensing and to identify reasons for which increased oxygen delivery is necessary.
- Describe the mechanisms, specific causes and consequences of an elevated erythropoietin level.
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