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Questions and Answers
Which of the following clinical features is NOT commonly seen in patients with ITP?
What is the first-line treatment for adults with ITP presenting with platelets ≥30x10^9/L?
What is the recommended treatment for children with ITP who do not usually require immediate intervention?
In patients with ITP, what is the only blood count abnormality typically observed?
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When might intravenous immunoglobulin (iv IgG) be used as a treatment option for ITP?
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What is the inheritance pattern of Haemophilia A?
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Which factor is deficient in Haemophilia A?
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What is the clinical severity of Haemophilia A dependent on?
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Which bleeding pattern is typical in Haemophilia A?
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What is a major complication in some Haemophilia A patients due to treatment with FVIII concentrate?
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Which type of bleeding pattern is NOT seen in Haemophilia A?
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What is the main function of platelets in haemostasis?
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Which enzyme is considered a key player in the blood coagulation process?
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In blood coagulation, what is the role of tissue thromboplastin?
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Which clotting factors require Vitamin K for their synthesis?
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What is the main function of fibrinolysis in haemostasis?
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Why is clinical laboratory testing important in the diagnosis and treatment of haemostatic disorders?
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What is the main reason for preparing platelet-poor plasma (PPP) before accurate coagulation testing?
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Which anticoagulant is typically used for clotting studies in blood samples?
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What is the primary purpose of conducting a 50:50 Correction Study with normal and deficient plasmas in APTT testing?
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Which test is used as an index of platelet integrity in routine haemostatic function assessments?
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What is the characteristic symptom related to platelet count when it drops below 20x10^9/L?
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Which of the following is NOT a cause of thrombocytopenia due to increased platelet destruction/use?
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Haemophilia A is inherited as an autosomal dominant trait.
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Von Willebrand’s disease is more common in females than males.
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Deficiencies of all clotting factors have been described in acquired coagulation disorders.
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Haemophilia A can present with purpura as a common feature.
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Splenectomy is considered the first-line treatment for children with ITP.
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Partial thromboplastin time is typically shortened in patients with Haemophilia A.
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ITP in adults does not require treatment if platelet count is above 30x10^9/L.
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Aids is a major complication in most patients with Haemophilia A.
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High dose anti-inflammatory steroids are used as a first-line treatment for children with ITP.
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IV immunoglobulin is primarily used in adults with ITP for urgent surgery.
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Bleeding due to severe thrombocytopenia is a common clinical feature in patients with ITP.
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In the blood coagulation process, thrombin is a key enzyme responsible for clot formation.
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Platelets play a role in the early stage of haemostasis through their ability to synthesize clotting factors.
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Fibrinolysis is the process of forming fibrin plugs to prevent excessive internal bleeding.
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The intrinsic pathway of the coagulation cascade is activated by tissue thromboplastin.
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Laboratory testing for haemostasis primarily focuses on assessing platelet count and size.
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Plasminogen activator is responsible for converting plasminogen into plasmin, aiding in fibrin degradation.
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Thrombocytopenia is characterized by an abnormally high platelet count.
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In ITP, the immune system produces antibodies that destroy red blood cells.
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Platelet abnormalities can lead to bleeding from skin and mucous membranes.
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Thrombotic thrombocytopenic purpura is caused by hypersplenism.
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Idiopathic thrombocytopenic purpura (ITP) is more common in children than in adults.
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Thrombocytopenia can be caused by increased platelet production.
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Bleeding due to thrombocytopenia is characterized by excessive clotting.
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Megaloblastic anemia is a potential cause of increased platelet destruction.
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Thrombocytopenia can be caused by autoimmune disorders like systemic lupus erythematosus (SLE).
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Platelet count below 50 x 10^9/L is associated with spontaneous bleeding.
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Study Notes
- Normal haemostasis involves clotting mechanisms to control bleeding and prevent pathological thrombosis.
- Platelets play a crucial role in early hemostasis through adhesion to exposed collagen and aggregation to form a hemostatic plug.
- Blood coagulation involves the activation of clotting factors leading to the formation of a permanent hemostatic plug made of fibrin.
- Fibrinolysis is the process of breaking down fibrin thrombi with the enzyme plasmin.
- Clinical laboratory testing is essential for diagnosing and treating hemostatic disorders and includes routine and specialized tests for assessing hemostasis.
- Abnormalities of blood platelets can lead to bleeding due to thrombocytopenia or abnormal platelet function, characterized by purpura and mucous membrane bleeding.
- Disorders of blood coagulation can result from congenital clotting factor deficiencies or acquired disorders, leading to symptoms like hemarthroses, muscle hematomas, and bleeding after injury or surgery.
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Description
Learn about the clinical features, laboratory investigations, and treatment options for patients with Idiopathic Thrombocytopenic Purpura (ITP). Understand the common symptoms and approaches to managing this autoimmune disorder affecting platelets.
