Ads
related to: thrombocytopenia caused by splenic sequestration or symptoms treatment- About Chronic ITP
Learn More About What It Is
& How It Is Treated.
- View Prescribing Info
Click To Find Full Prescribing
Info For This Medication.
- Connect With Coordinators
Click To Download Our Forms
Or Get Assistance.
- Join For Exclusive Tips
Sign Up For Our Community Tips
Delivered To Your Doorstep & Inbox
- About Chronic ITP
Search results
Results from the WOW.Com Content Network
One common definition of thrombocytopenia requiring emergency treatment is a platelet count below 50,000/μL. [5] Thrombocytopenia can be contrasted with the conditions associated with an abnormally high level of platelets in the blood – thrombocythemia (when the cause is unknown), and thrombocytosis (when the cause is known).
Up to 30% of these children may develop splenic sequestration crisis with a mortality rate of up to 15%. This crisis occurs when splenic vaso-occlusion causes a large percentage of total blood volume to become trapped within the spleen. Clinical signs include severe, rapid drop in hemoglobin leading to hypovolemic shock and death.
This results in platelet activation and the formation of platelet microparticles, which initiate the formation of blood clots; the platelet count falls as a result, leading to thrombocytopenia. [1] [7] In addition, the reticuloendothelial system (mostly the spleen) removes the antibody-coated platelets, further contributing to the thrombocytopenia.
Increased deoxygenation causes sickling of red blood cells, which adhere to the spleen wall and splenic macrophages causing ischemia. [2] This ischemia can result in splenic sequestration, where large amounts of blood pool in the spleen but do not flow within vasculature. [11]
The basic pathology is some kind of obstructive pathology in the portal, hepatic or splenic vein that causes obstruction of venous blood flow from the spleen towards the heart. The cause of such obstruction may be abnormalities present at birth (congenital) of certain veins, blood clots, or various underlying disorders causing inflammation and ...
Platelet transfusion is the main treatment for people presenting with bleeding symptoms. There have been experiments with DDAVP (1-deamino-8-arginine vasopressin) and splenectomy on people with giant platelet disorders with mixed results, making this type of treatment contentious. [8]
Thrombotic thrombocytopenic purpura (TTP) initially presents with a range of symptoms that may include severe thrombocytopenia (platelet count usually < 30,000/mm³), microangiopathic hemolytic anemia (evidenced by schistocytes in the blood smear), and various clinical signs such as petechiae, purpura, neurologic symptoms, myocardial ischemia ...
Splenic infarction occurs when the splenic artery or one of its branches are occluded, for example by a blood clot. [3] In one series of 59 patients, mortality amounted to 5%. [3] Complications include a ruptured spleen, bleeding, an abscess of the spleen (for example, if the underlying cause is infective endocarditis) or pseudocyst formation ...
Ads
related to: thrombocytopenia caused by splenic sequestration or symptoms treatment