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Several studies have now assessed the benefit of using preventive platelet transfusions in adults with dengue who have profound thrombocytopenia (platelet count < 20 x 10 9 /L. [17] There is no evidence that this reduce the risk of bleeding, but there is evidence that they increase the risk of harm due to the platelet transfusion (increased ...
This greatly increases the risks of the transfusion. Each unit of platelets separated from donated whole blood is called a "platelet concentrate". [citation needed] Modern automatic thrombapheresis allows blood donors to give a portion of their platelets, while keeping their red blood cells and at least a portion of blood plasma. Therefore, no ...
Risk factors for TACO are diseases that increase the amount of fluid a person has, including liver, heart, or kidney failure, as well as conditions that require many transfusions. High and low extremes of age are a risk factor as well. [5] [6] [7]
Platelet transfusion is contraindicated in thrombotic thrombocytopenic purpura (TTP), as it fuels the coagulopathy. Platelet transfusion is generally ineffective, and thus contraindicated, for prophylaxis in immune thrombocytopenia (ITP), because the transfused platelets are immediately cleared; however, it is indicated to treat bleeding. [70]
The risk of severe bacterial infection is estimated, as of 2020, at about 1 in 2,500 platelet transfusions, and 1 in 2,000,000 red blood cell transfusions. [44] Blood product contamination, while rare, is still more common than actual infection.
It is often impossible to distinguish TRALI from acute respiratory distress syndrome (ARDS). The typical presentation of TRALI is the sudden development of shortness of breath, severe hypoxemia (O 2 saturation <90% in room air), low blood pressure, and fever that develop within 6 hours after transfusion and usually resolve with supportive care within 48 to 96 hours.
With plasma exchange the risk of death has decreased from more than 90% to less than 20%. [1] Immunosuppressants, such as glucocorticoids, and rituximab may also be used. [3] Platelet transfusions are generally not recommended. [6] About 1 per 100,000 people are affected. [3] Onset is typically in adulthood and women are more often affected. [3]
Post-transfusion purpura (PTP) is a delayed adverse reaction to a blood transfusion or platelet transfusion that occurs when the body has produced alloantibodies to the allogeneic transfused platelets' antigens. These alloantibodies destroy the patient's platelets leading to thrombocytopenia, a rapid decline in platelet count. [1]
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