Immune thrombocytopenia itp, previously known as idiopathic thrombocytopenic purpura, is defined as isolated thrombocytopenia with normal bone marrow and in the absence of other causes of thrombocytopenia. Immune thrombocytopenia itp is a bleeding disorder caused by thrombocytopenia not associated with a systemic disease. In this disease, autoantibodies against platelets render them susceptible to rapid. On the other hand, it is increasingly recognized that a patient of ttp may be asymptomatic, has isolated thrombocytopenia requiring distinction from idiopathic thrombocytopenic purpura, or even presents with a transient ischemic attack tia or stroke without hematological changes. The pathogenesis of immune thrombocytopaenic purpura nichola cooper and james bussel department of pediatrics, weill medical college of cornell university, new york, ny, usa summary immune thrombocytopaenic purpura itp is an autoimmune bleeding disease that is rarely fatal. Thus, the humoral autoimmune cause of itp was established. The body destroys the platelets that carry the antibodies. Treatment of itp can be divided into medical and surgical. Platelets are small plateshaped bodies in the blood that combine to form a plug when a blood vessel is injured. May 24, 20 primary immune thrombocytopenia, or idiopathic thrombocytopenic purpura itp, is an autoimmune disorder characterized by isolated thrombocytopenia due to accelerated platelet destruction and impaired platelet production. Racgp incidentally detected thrombocytopaenia in adults. Pathophysiology and therapeutic options in primary immune. Idiopathic thrombocytopenic purpura itp is a blood disorder characterized by an abnormal decrease in the number of platelets in the blood.
Thrombotic thrombocytopenic purpura ttp is a blood disorder that results in blood clots forming in small blood vessels throughout the body. However, most cases are now considered to be immunemediated another form is thrombotic thrombocytopenic purpura. The pathogenesis of immune thrombocytopaenic purpura. In some cases, the thrombocytopenia is also immunemediated. Overview of thrombocytopenia blood disorders merck. Immune thrombocytopenia itp hematology and oncology. Pathophysiology of thrombotic thrombocytopenic purpura. Patients with low platelets are at risk of bruising and rarely, serious bleeding. Download as docx, pdf, txt or read online from scribd. Itp vs ttp blood disorders are conditions wherein the normal function of blood is. So, a decrease in platelets can result in easy bruising, bleeding gums, and bleeding inside the body. Symptoms may include bruising, nosebleed or bleeding in the mouth, bleeding into the skin, and abnormally heavy menstruation. The acronym itp stands for primary immune thrombocytopenia formerly idiopathic thrombocytopenic purpura, an acquired autoimmune disorder characterised by isolated thrombocytopenia in the absence of conditions known to cause thrombocytopenia, such as infections, other autoimmune disorders, drugs, etc 1. Idiopathic thrombocytopenia purpura itp in adults fact.
Once the antibodies have attached to platelets, the platelets do not work so well. Clinical features significant bleeding from multiple sites nose, mucous. Spleen size is normal in the absence of another underlying condition. Immune thrombocytopenia purpura itp, also known as idiopathic thrombocytopenic purpura, is a type of thrombocytopenic purpura defined as an isolated low platelet count with a normal bone marrow in the absence of other causes of low platelets. Primary immune thrombocytopenic purpura autoimmune thrombocytopenic purpura it is defined as an isolated thrombocytopenia with normal bone marrow in the absence of other causes of thrombocytopenia. Congenital thrombotic thrombocytopenic purpura congenital ttp is a blood disorder in which blood clots form in the small blood vessels throughout the body. Idiopathic thrombocytopenia purpura itp is a condition that causes low platelets. Idiopathic thrombocytopenic purpura is an autoimmune disease which involves opsonization of platelets by autoantibodies directed against different surface glycoproteins, leading to their premature. Idiopathic thrombocytopenia purpura is a blood disorder affecting the platelets. Itp is an autoimmune disorder characterized by isolated thrombocytopenia without abnormalities in the erythroid and myeloidlymphoid lineages.
We assessed the effectiveness of highdose dexamethasone as. The mechanism of platelet destruction in immune idiopathic thrombocytopenic purpura itp is thought to involve production of autoantibody to platelet surface antigens. Differentiating idiopathic thrombocytopenic purpura from other diseases. The diagnosis of idiopathic thrombocytopenic purpura itp is suspected. Background no firm data are available on the natural history of idiopathic thrombocytopenic purpura itp or on mortality rates or frequency of major bleeding episodes associated with this condition. Idiopathic thrombocytopenic purpura itp is a bleeding disorder caused by an abnormally low level of blood platelets, small discshaped cells essential to blood clotting coagulation.
Ncp risk for bleeding related to decreased platelet count scribd. It is a condition in, which there is bruising purpura because there are fewer platelets in the blood than usual thrombocytopenia and it is not known what causes it idiopathic. Idiopathic thrombocytopenia purpura itp in adults fact sheets. Refractory itp not responsive to conventional treatment may require surgical removal of. These cells clump together at the site of a blood vessel injury in order to prevent blood loss. By tradition, the term idiopathic thrombocytopenic purpura is used when the cause is idiopathic. It is conventionally thought that thrombocytopenia in itp. Platelets are small blood cells needed for normal blood clotting. Thrombotic thrombocytopenic purpura ttp has long been recognized as a dire hematologic emergency. Low fetal risks in pregnancies associated with idiopathic thrombocytopenic purpura. Immune thrombocytopenic purpuraitp druginduced immune.
In autoimmune disorders your body makes proteins called antibodies which damage another part of your body. These include congenital disorders, bone marrow disorders, infectious causes, drug effect, and immunologic causes. Thrombocytopenia brief discussion platelet blood cell scribd. The disease is thought to have a relatively benign course, despite the frequent occurrence of very low platelet counts. In the summer of 1950, two hematology fellows working at the barnes hospital in st.
Idiopathic thrombocytopenic purpura itp is characterized by a low platelet count, which is the result of both increased platelet destruction and insufficient platelet production. Thrombocytopenia brief discussion free download as word doc. Chronic immune thrombocytopenic purpura itp is an autoimmune disorder in which the patients immune system reacts with a platelet autoantigens resulting. Formerly known as idiopathic thrombocytopenic purpura, itp can cause purple bruises, as well as tiny reddishpurple dots that look like a rash. Itp is a heterogeneous disorder with variable clinical symptoms and remains a diagnosis of exclusion of other causes of thrombocytopenia. Idiopathic thrombocytopenic purpura itp is a rare autoimmune disorder that causes you to have low platelet levels. Diopathic thrombocytopenic purpura itp, also known as primary immune thrombocytopenic purpura is a hematologic disorder for which appropriate diagnostic and treatment strategies are uncertain. Definition and diagnosis of immune thrombocytopenic purpura. Itp has 2 distinct clinical syndromes, manifesting as an acute condition in children and a chronic condition in adults. Page 1 by definition platelet count less than 1,00,000 cu. Valsalva retinopathy associated with idiopathic thrombocytopenic purpura and positive antiphospholipid antibodies. Pathophysiology of immune thrombocytopenic purpura.
Symptoms may include large bruises, fever, weakness, shortness of breath, confusion, and headache. Itp occurs when certain immune system cells produce antibodies against platelets. A sound understanding of pathophysiology is essential for the. The incidence of itp in adults is estimated at approximately 1. He rapidly developed severe, but transient, thrombocytopenia and was at risk for serious hemorrhage. Platelets are sequestered in the spleen and undergo phagocytosis by mononuclear macrophages, leading to the platelets shortened lifespan.
When platelet levels are low, bleeding may occur anywhere in your body. Thrombocytopenia can occur for a number of different reasons. Idiopathic thrombocytopenic purpura itp causes, symptoms. Idiopathic thrombocytopenic purpura itp better health. It results from platelet destruction by macrophages due to an antiplatelet factor. Signs and symptoms typically develop in infancy or early childhood, but in some cases they do not develop until adulthood, particularly during pregnancy in women or after an infection or vaccination. Idiopathic thrombocytopenic purpura itp is defined as a hematologic disorder, characterized by isolated thrombocytopenia without a clinically apparent cause. Imunology and pathophysiology chronic idiopathic thrombositopenic purpura. In idiopathic thrombocytopenic purpura itp, platelets survive 1 to 3 days or less. Immune thrombocytopenia purpura itp, also known as idiopathic thrombocytopenic purpura. A platelet is a type of blood cell that helps the blood clot. Idiopathic thrombocytopenic purpura itp is a decrease in the number of circulating platelets less than 100,000 per mm2 in the absence of toxic exposure or a disease associated with a low platelet count.
Idiopathic thrombocytopenia purpura itp is an acquired disorder, resulting from an increase in the breakdown of platelets. Idiopathic thrombocytopenic purpura is a systemic illness characterized by ecchymoses extensive purplish patchs caused by extravasation of blood into the skin and hemorrhages from mucous membranes and very low platelet counts. Idiopathic thrombocytopenic purpura is a blood disorder characterized by an abnormal decrease in the number of platelets in the blood. Typically, it is chronic in adults, but it is usually acute and selflimited in children. Platelets are cells in the blood that help stop bleeding. Molecular mimicry diagnostic approach itp diagnosis is of exclusion. Platelets help your blood clot by clumping together to plug small holes in damaged blood vessels. The body attempts to compensate by increasing platelet production, but this compensation is incomplete.
Definition of itp immune thrombocytopenic purpura itp is. Immune thrombocytopenia itp symptoms and causes mayo clinic. Itp has two distinct clinical syndromes, manifesting as an acute condition in children and a chronic condition in adults. Background the role of highdose dexamethasone in the treatment of immune thrombocytopenic purpura in adults is controversial. Idiopathic thrombocythemia is a rare condition of which about 80 cases have been reported. Slow and disturbed flow is a common cause of venous thrombosis in immobilized or postsurgical patient. Idiopathic thrombocytopenic purpura case study free download as powerpoint presentation. Immune thrombocytopenia itp is a disorder that can lead to easy or excessive bruising and bleeding. Definition idiopathic thrombocytopenic purpura, or itp, is a bleeding disorder caused by an abnormally low level of platelets in the patients blood.
Feb 03, 2020 immune thrombocytopenia may happen when your immune system attacks and destroys your platelets. Platelets are cell fragments that are found in the blood and normally help the blood to clot. Eltrombopag for the treatment of chronic idiopathic. Although the development of autoantibodies against platelet glycoproteins remains central in the pathophysiology of itp, several abnormalities involving the cellular. Platelets, or thrombocytes, are blood cells produced in the bone marrow. Immune idiopathic thrombocytopenic purpura or itp for short is a bleeding disorder caused by a shortage of tiny cells in the blood called platelets. Idiopathic thrombocytopenic purpura genetic and rare.
In people with itp, the body produces antibodies that attack and destroy the platelets. Doctors suspect thrombocytopenia in people who have abnormal bruising and bleeding. Idiopathic thrombocytopenic purpura iip in the association with ischemic stroke high risk the. The pathogenesis of chronic immune thrombocytopenic purpura. Causes the accumulation of activated clotting factors and platelets and prevents their interactions with inhibitors. Management of immune thrombocytopenic purpura in adults. Cmediated platelet lysis and newly described cindependent peroxide injury.
Idiopathic thrombocytopenic purpura flashcards quizlet. Historically, nearly all patients died during the first month of illness with severe hemolytic anemia, abundant schistocytes, profound thrombocytopenia, neurological deficits, renal injury, and fever. Itp is defined as isolated thrombocytopenia with no clinically apparent associated conditions or other causes of thrombocytopenia. Thrombocytopenia free download as powerpoint presentation. Normally, the life span of platelets in circulation is 7 to 10 days. They often check the number of platelets routinely in people who have disorders that might cause thrombocytopenia. In itp, antibodycoated platelets are destroyed by macrophages of res. Causes include infection and drug sensitivity and toxicity. Thrombocytopenia and idiopathic thrombocytopenic purpura. Idiopathic thrombocytopenic purpera free download as powerpoint. Platelets are cells that help the blood clot or stop bleeding. Normal bone marrow megakaryocytes immune thrombocytopenic purpura. Immune thrombocytopenic purpura itp is an autoimmune disorder.
It causes a characteristic red or purple bruiselike rash and an increased tendency to bleed. The lower the platelet count, the greater the risk of bleeding. The bleeding risk and natural history of idiopathic. Immune thrombocytopenia itp in emergency medicine clinical. In healthy people, old platelets are destroyed in the spleen by a type of white cell called a macrophage. The pathogenesis of immune thrombocytopaenic purpura nichola cooper and james bussel department of pediatrics, weill medical college of cornell university, new york, ny, usa summary immune thrombocytopaenic purpura itp is an autoimmune bleeding disease that is. Autoantibodies against platelet surface glycoproteins, such as gpiibiiia and gpibix complexes, play major roles in both platelet destruction and impaired platelet. Idiopathic autoimmune thrombocytopenic purpura itp the most common cause of acute onset of thrombocytopenia in an otherwise well child estimated about 1 in 20,000 children a recent history of viral illness is described in 5065% of cases of childhood itp 1252015 idiopathic thrombocytopenic purpura prof. Once coated with antibody, circulating platelets undergo sequestration via interaction with fc receptors of macrophages in the reticuloendothelial system.
Idiopathic thrombocytopenic purpura or immune thrombocytopenia itp is the most common acquired blood disorder. Jan 25, 2015 idiopathic autoimmune thrombocytopenic purpuraitp the most common cause of acute onset of thrombocytopenia in an otherwise well child estimated about 1 in 20,000 children a recent history of viral illness is described in 5065% of cases of childhood itp 1252015 idiopathic thrombocytopenic purpura prof. Immune thrombocytopenic purpura itp itp is an immune disorder characterised by isolated thrombocytopenia and is strictly a diagnosis of exclusion. Idiopathic thrombocytopenia purpura itp is an acquired disorder. The information presented in this fact sheet is intended as a general guide only. American society of hematology 2019 guidelines for immune. Idiopathic thrombocytopenia purpura itp in children. Itp describes both the cause and symptoms of the condition. Dec 14, 2019 idiopathic thrombocytopenic purpura itp, also known as primary immune thrombocytopenic purpura and autoimmune thrombocytopenic purpura, is defined as isolated thrombocytopenia with normal bone marrow and in the absence of other causes of thrombocytopenia. What is immune idiopathic thrombocytopenic purpura. In 1994, the american society of hematology ash established a panel to produce explicitly developed practice guidelines for the diagnosis.
Congenital thrombotic thrombocytopenic purpura genetic. Immune thrombocytopenic purpura itp is a bleeding disorder in which the immune system destroys platelets, which are necessary for normal blood clotting. The treatment for one type of anemia may be both inappropriate and. Moreover, the prognosis in quality of treatment strikes the endangering differential. Idiopathic thrombocytopenic purpera platelet bleeding scribd. Immune thrombocytopenia may also be called idiopathic thrombocytopenia or itp. Pathophysiology of platelet destruction in immune idiopathic. Platelets circulate in the blood for approximately eight to 10 days. This is usually a side effect of another disease process such as leukemia and some immune system disorders, or the use of certain medications. Management of adult idiopathic thrombocytopenic purpura. Apr 30, 2019 immune thrombocytopenia itp is a disorder that can lead to easy or excessive bruising and bleeding. Primary immune thrombocytopenic purpura itp, also referred to as idiopathic thrombocytopenic purpura, is an organspecific autoimmune disorder in which antibodycoated or immune complexcoated platelets are destroyed prematurely by the reticuloendothelial system, resulting in peripheral blood thrombocytopenia.
Download as pptx, pdf, txt or read online from scribd. How i treat idiopathic thrombocytopenic purpura itp blood journal. The goal of treatment is to raise the platelet count into a hemostatically safe range. Initial treatment of immune thrombocytopenic purpura with. Itp is a blood disorder that causes a decrease in the number of platelets in the blood. Immune thrombocytopenia itp symptoms and causes mayo. Our understanding of the pathophysiology of itp owes to pioneering work of w j harrington in 1951, delineating the immunologic nature of platelet destruction. Idiopathic thrombocytopenia purpura is an immune mediated. Idiopathic thrombocytopenic purpura case study platelet. Page 6 of 11 idiopathic thrombocytopenia purpura pregnancy itp in pregnancy must be differentiated from the following.
This results in a low platelet count, low red blood cells due to their breakdown, and often kidneys, heart, and brain dysfunction. A decrease in platelets can result in easy bruising, bleeding gums and internal bleeding. This is because platelets are being destroyed by the immune system. To diagnose immune thrombocytopenia, your doctor will try to exclude other possible causes of bleeding and a low platelet count, such as an underlying illness or medications you or your child may be taking. Dec 14, 2019 immune thrombocytopenia itp, previously known as idiopathic thrombocytopenic purpura, is defined as isolated thrombocytopenia with normal bone marrow and in the absence of other causes of thrombocytopenia. Itp has two distinct clinical syndromes, manifesting as an acute condition in children. Hollingsworth hatched a plan to test their idea that the cause of the idiopathic thrombocytopenic purpura itp in a woman under their care was a factor in the blood that destroyed platelets. Idiopathic thrombocytopenic purpura itp is a common hematologic disorder manifested by immunemediated thrombocytopenia. Idiopathic thrombocytopenic purpura itp is a bleeding disorder characterized by too few platelets in the blood. Idiopathic thrombocytopenic purpura itp causes, symptoms and treatment childrens hospital of philadelphia. With treatment, the chance of remission a symptomfree period is good. William harrington, infused himself with plasma from a patient with immune thrombocytopenic purpura itp. The disorder frequently leads to early death unless the patients are treated with plasma exchange or infusion. Platelets are small cells that circulate in the blood that are responsible for preventing bleeding and bruising.
Immune thrombocytopenia itp diagnosis and treatment. Itp vs ttp blood disorders are conditions wherein the. Cerebral infarction in risk factor of adenoma and symptomatic. Angela azalia free download as powerpoint presentation. No specific criteria establish the diagnosis of itp. Idiopathic thrombocytopenia definition of idiopathic. Sometimes they discover thrombocytopenia when blood tests are done for other reasons in people who have no bruising or bleeding. Pathophysiology and management of primary immune thrombocytopenia. Causes the exact cause of idiopathic thrombocytopenic purpura is. Primary immune thrombocytopenia also known as idiopathic thrombocytopenic purpura. The diagnosis remains one of exclusion, after other thrombocytopenic disorders are ruled out based on history, physical examination, and laboratory evaluation. When a person has an injury such as a cut to the skin, platelets help the blood to form a clot and stop the bleeding.
Patients should seek further advice and information about idiopathic thrombocytopenia purpura itp in adults and or their individual condition from their treating haematologist or doctor. Idiopathic thrombocytopenia purpura itp is often an immunemediated disease causing uncontrolled bleeding in veterinary patients. Nursing care plan for thrombocytopenia nrsng nursing courses. Itp, malignancy, hypersplenism, aplastic anemia, leptospirosis, chickungunya, drug. Pathophysiology hematologic disorders flashcards quizlet. Thrombocytopenia is when there is a low platelet count and an increased risk of bleeding. Idiopathic thrombocytopenic purpura itp is an autoimmune disease in which antiplatelet antibodies accelerate the destruction of platelets. In addition, platelet production can be impaired 1. Thrombocytopenia with infection is usually caused by bone marrow suppression. Megan brashear, cvt vts ecc discusses the common clinical signs of itp and some of the treatments for it. The bleeding results from unusually low levels of platelets the cells that help blood clot.
336 1126 304 1170 836 494 1344 1148 392 1344 340 1540 27 920 1635 1678 807 39 1598 1454 1045 1514 13 35 618 1455 868 988 1191 1400 1046 1631 767 17 710 164 248 1108 1496 72 739 726 573