​which condition is known as bone marrow depression anemia
Aplastic anemia Aplastic anemia is a rare disease in which the bone marrow and the hematopoietic stem cells that reside there are damaged.[1] This causes a deficiency of all three blood cell types (pancytopenia): red blood cells (anemia), white blood cells (leukopenia), and platelets (thrombocytopenia).[2][3] Aplastic refers to inability of the stem cells to generate mature blood cells.
Hypoxemia Hypoxemia (or hypoxaemia in British English) is an abnormally low level of oxygen in the blood.[1][2] More specifically, it is oxygen deficiency in arterial blood.[3] Hypoxemia has many causes, often respiratory disorders, and can cause tissue hypoxia as the blood is not supplying enough oxygen to the body.