what is the difference between secondary polycythemia and polycythemia vera?
537514
Secondary polycythemia is defined as an absolute increase in red blood cell mass that is caused by enhanced stimulation of red blood cell production. In contrast, polycythemia vera is characterized by bone marrow with an inherent increased proliferative activity.
198153
Differences between Primary and Secondary Immune Response. The primary immune response occurs when an antigen comes in contact to the immune system for the first time. ... The secondary immune response occurs when the second time (3rd, 4th, etc.) the person is exposed to the same antigen.
264704
Primary hemostasis refers to platelet aggregation and platelet plug formation. ... Secondary hemostasis refers to the deposition of insoluble fibrin, which is generated by the proteolytic coagulation cascade. This insoluble fibrin forms a mesh that is incorporated into and around the platelet plug.
625651
Signs and Symptoms Polycythemia vera (PV) develops slowly, and it may not cause symptoms for many years. The condition is often diagnosed during a routine blood test before severe symptoms occur. Symptoms may include: Itchy skin, called “pruritus,” especially after warm baths or showers.
1265053
A secondary IV is usually used for medications and usually contains a smaller volume than the primary IV; secondary IV bags are usually 50-250 mL, while the most frequently used primary IV bags are 500 or 1000 mL.
856534
Polycythemia in the Newborn. Polycythemia is an abnormally high concentration of red blood cells. This disorder may result from postmaturity, diabetes in the mother, twin-to-twin transfusions, in which blood flows from one fetus to the other, or a low oxygen level in the fetus's blood.
586514
Decreased production of platelets Leukemia and other cancers. Some types of anemia. Viral infections, such as hepatitis C or HIV. Chemotherapy drugs and radiation therapy.
548506
Polycythemia vera (a blood disorder in which the bone marrow produces too many red blood cells) Kidney tumors. Lung disease, such as emphysema, COPD, pulmonary fibrosis (lung tissue becomes scarred) Hypoxia (low blood oxygen levels)
291621
Polycythemia vera (pol-e-sy-THEE-me-uh VEER-uh) is a type of blood cancer. It causes your bone marrow to make too many red blood cells. These excess cells thicken your blood, slowing its flow, which may cause serious problems, such as blood clots.
1331131
Classically, MDS has a hypercellular marrow – too many cells. In contrast, aplastic anemia has a hypocellular marrow, showing a very low number of cells. But there is a subset of MDS called hypocellular MDS.
735860
The overproduction of red blood cells and high hematocrit levels associated with polycythemia vera can contribute to systemic hypertension; high hematocrit levels have been found to interfere with the vasodilatory effects of nitric oxide.
586444
A classic symptom of polycythemia vera is pruritus or itching, particularly after exposure to warm water (such as when taking a bath), which may be due to abnormal histamine release or prostaglandin production. Such itching is present in approximately 40% of patients with polycythemia vera.
1130320
Essential thrombocythemia. This term is used when a high platelet count occurs alone (that is, without other blood cell disorders). Idiopathic (id-ee-o-PATH-ick) thrombocythemia. Primary or essential thrombocytosis (these are less favored terms).
302599
A high MPV means that your platelets are larger than average. This is sometimes a sign that you're producing too many platelets. Platelets are produced in the bone marrow and released into the bloodstream. Larger platelets are usually young and more recently released from the bone marrow.
166282
The diagnosis of polycythemia vera in patients with sickle cell disease may be difficult to document and the association of these disorders has not been previously reported. This patient's high red blood cell and platelet counts did not result in recurrent vasoocclusive crises.
1154551
The main difference between secondary-progressive MS (SPMS) and primary-progressive MS (PPMS) centers on the presence or absence of relapses. SPMS develops in patients who initially had relapsing-remitting MS (RRMS) as a secondary phase of that disease course.
902879
Microcytic anemia is defined as the presence of small, often hypochromic, red blood cells in a peripheral blood smear and is usually characterized by a low MCV (less than 83 micron 3). Iron deficiency is the most common cause of microcytic anemia.