Discussion
Polycythemia is disease related to ____ ?
Answer: C
Polycythemia is a disease of the blood.
Polycythemia means an abnormally high number of red blood cells, which makes the blood thicker. Polycythemia vera is a bone-marrow disorder, and secondary polycythemia can follow chronic low oxygen, as at high altitude.
It affects the heart and other organs only indirectly; it is classed as a blood disorder.
It can be detected by a raised haemoglobin or haematocrit in a routine blood test, and its main risk is clotting, because thicker blood flows more slowly.
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