What is the pathophysiology of idiopathic thrombocytopenic purpura?
The pathophysiology of ITP is complex and abnormalities of both the B-cell and the T-cell compartments have been identified. The mechanisms of the thrombocytopenia involve both increased platelet destruction and, in a significant proportion of cases, impaired platelet production.
What is meant by thrombocytopenic purpura?
(ih-MYOON THROM-boh-sy-toh-PEE-nik PUR-pyoo-ruh) A condition in which platelets (blood cells that cause blood clots to form) are destroyed by the immune system. The low platelet count causes easy bruising and bleeding, which may be seen as purple areas in the skin, mucous membranes, and outer linings of organs.
What are the two types of thrombocytopenia?
The three main classes of thrombocytopenia are:
- Platelet destruction such as with an auto-antibody that attaches to the platelet surface.
- Platelet sequestration such as in someone with a large spleen or with liver disease.
- Decreased platelet production as occurs in certain bone marrow diseases.
What happens in idiopathic thrombocytopenic purpura?
Idiopathic thrombocytopenic purpura is a blood disorder characterized by an abnormal decrease in the number of platelets in the blood. Platelets are cells in the blood that help stop bleeding. A decrease in platelets can result in easy bruising, bleeding gums and internal bleeding.
What is the difference between immune thrombocytopenia and Idiopathic thrombocytopenia?
Immune thrombocytopenia, or ITP, is an immune disorder where blood doesn’t clot quickly because the body doesn’t have enough platelets. As a result, ITP can lead to excessive bruising and bleeding internally, as well as on and under the skin.
What are the causes of thrombocytopenia?
Platelets stop bleeding by clumping and forming plugs in blood vessel injuries. Thrombocytopenia might occur as a result of a bone marrow disorder such as leukemia or an immune system problem. Or it can be a side effect of taking certain medications. It affects both children and adults.
What are the risk factors for thrombocytopenia?
Risk Factors of Thrombocytopenia
- Have certain types of cancer, aplastic anemia, or autoimmune diseases.
- Are exposed to certain toxic chemicals.
- Have a reaction to certain medicines.
- Have certain viruses.
- Have certain genetic conditions.
What is acute idiopathic thrombocytopenic purpura?
What is purpura caused by?
They happen when small blood vessels leak blood under your skin’s surface. Purpura isn’t a medical condition but a sign of another condition causing the bleeding. Purpura can also be caused by drug interactions, vitamin deficiencies or congenital disorders. There are many different types of purpura.
How is idiopathic thrombocytopenic purpura diagnosis?
Blood smear: For this test, some of your blood is put on a slide. A microscope is used to look at your platelets. Bone marrow tests: These tests check whether your bone marrow is healthy. You may need this test to confirm that you have ITP and not another platelet disorder, especially if your treatment is not working.
What are the complications of thrombocytopenia?
Complications of thrombocytopenia include:
- Adverse effects of treatment.
- Anemia.
- Excessive or uncontrollable bleeding.
- Gastrointestinal bleeding.
- Intracerebral hemorrhage (bleeding in the brain)
- Severe nosebleeds.
What happens thrombocytopenia?
Thrombocytopenia is a condition that occurs when the platelet count in your blood is too low. Platelets are tiny blood cells that are made in the bone marrow from larger cells. When you are injured, platelets stick together to form a plug to seal your wound. This plug is called a blood clot.
Is idiopathic thrombocytopenic purpura hereditary?
Chronic ITP typically affects adults. Most adults with ITP are young women, but it can occur in anyone. ITP does not seem to be hereditary (run in families). ITP is not contagious (you can’t “catch it” from someone else).
What is difference between petechiae and purpura?
Petechiae are small (1–3 mm), red, nonblanching macular lesions caused by intradermal capillary bleeding (Figure 181-1). Purpura are larger, typically raised lesions resulting from bleeding within the skin (Figures 181-2 and 181-3).