Answer:
Secondary polycythemia
Explanation:
Polycythemia refers to a condition whereby the hematocrit is increased. having a lung disease that causes a reduction in ventilation will lead to a reduction the partial pressure of oxygen and hence an abnormally reduced amount of oxygen in the blood (hypoxemia). At high altitudes, the partial pressure of oxygen is lower than at sea level, leading to less oxygen available. This can also lead to hypoxemia in individuals living at high altitudes. Hypoxemia can trigger a significant increase in the rate of production of red blood cells from the bone marrows and can lead to a higher than normal hematocrit (Polycythemia). In this case, the polycythemia is termed secondary because it is triggered by a separate factor. Vera relative polycythemia on the other hand can be due to cancers that cause the bone marrows cells to multiply rapidly and produce abnormally high amounts of red blood cells.
