polycythemia

n (Pathology) an abnormal condition of the blood characterized by an increase in the number of red blood cells. It can occur as a primary disease of unknown cause (polycythaemia vera or erythraemia) or in association with respiratory or circulatory diseases[C19: from poly- + cyto- + -haemia]

polycythaemia

pol·y·cy·the·mi·a

(pol'ē-sī-thē'mē-ă) An abnormal increase in the number of red blood cells.
Synonym(s): erythrocythemia, polycythaemia. [poly- + G. kytos, cell, + haima, blood]

polycythaemia

An abnormal increase in the number of red blood cells as a result of increased red cell production by the bone marrow. This occurs naturally in people living at high altitudes (secondary polycythaemia) but may occur for no apparent reason (polycythaemia vera) causing flushed skin, headaches, high blood pressure (HYPERTENSION) and blurred vision. STROKE is a common complication. Treatment is by regular bloodletting (venesection) sometimes supplemented by the use of anticancer drugs or radioactive phosphorus. An American study reports that low-dose aspirin can safely prevent thrombotic complications in people with this disease. A gene for polycythaemia vera was reported in 1998.

pol·y·cy·the·mi·a

(pol'ē-sī-thē'mē-ă) An abnormal increase in the number of red blood cells.
Synonym(s): erythrocythemia, polycythaemia. [poly- + G. kytos, cell, + haima, blood]

单词	polycythaemia
释义	polycythaemia polycythaemia (ˌpɒlɪsaɪˈθiːmɪə) or polycythemia n (Pathology) an abnormal condition of the blood characterized by an increase in the number of red blood cells. It can occur as a primary disease of unknown cause (polycythaemia vera or erythraemia) or in association with respiratory or circulatory diseases[C19: from poly- + cyto- + -haemia] EncyclopediaSeePolycythemia polycythaemia pol·y·cy·the·mi·a (pol'ē-sī-thē'mē-ă) An abnormal increase in the number of red blood cells. Synonym(s): erythrocythemia, polycythaemia. [poly- + G. kytos, cell, + haima, blood] polycythaemia An abnormal increase in the number of red blood cells as a result of increased red cell production by the bone marrow. This occurs naturally in people living at high altitudes (secondary polycythaemia) but may occur for no apparent reason (polycythaemia vera) causing flushed skin, headaches, high blood pressure (HYPERTENSION) and blurred vision. STROKE is a common complication. Treatment is by regular bloodletting (venesection) sometimes supplemented by the use of anticancer drugs or radioactive phosphorus. An American study reports that low-dose aspirin can safely prevent thrombotic complications in people with this disease. A gene for polycythaemia vera was reported in 1998. pol·y·cy·the·mi·a (pol'ē-sī-thē'mē-ă) An abnormal increase in the number of red blood cells. Synonym(s): erythrocythemia, polycythaemia. [poly- + G. kytos, cell, + haima, blood] ThesaurusSeepolycythemia
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