Search results
Results from the WOW.Com Content Network
Higher platelet transfusion thresholds have been used in premature neonates, but this has been based on limited evidence. [19] There is now evidence that using a high platelet count threshold (50 x 10 9 /L) increases the risk of death or bleeding compared to a lower platelet count threshold (25 x 10 9 /L) in premature neonates. [20]
Each country has its own rules to protect the safety of both donor and recipient. In a typical set of rules, a platelet donor must weigh at least 50 kg (110 lb) and have a platelet count of at least 150 x 10 9 /L (150,000 platelets per mm³). [2] One unit has greater than 3×10 11 platelets. Therefore, it takes 2 liters of blood having a ...
If antigen negative platelets are unavailable, then standard neonatal platelet transfusions should be given until antigen negative platelets become available. [20] [19] If a platelet transfusion is not available immediately then the infant can be given IVIG (1g/kg) however, this will have no effect on the platelet count before 24 to 72 hours. [19]
Blood products are typically transfused at 2.0 to 2.5 ml/kg per hour but can be reduced to 1.0 ml/kg per hour for individuals at increased risk for TACO. [16] Patients susceptible to volume overload (e.g., renal insufficiency or heart failure) may be pre-treated with a diuretic either during or immediately following transfusion to reduce the ...
Platelets for transfusion can also be prepared from a unit of whole blood, whereby 4 or 5 buffy coats are pooled to produce a platelet component. Some blood banks have replaced this with platelets collected by plateletpheresis because whole blood platelets, sometimes called "random donor" platelets, must be pooled from multiple donors to get ...
Red blood cell concentrates, also known as red cell concentrates or packed red blood cells, are red blood cells that have been separated for blood transfusion. [1] A red blood cell concentrate typically has a haematocrit of 0.50 – 0.70 L/L and a volume between 250 and 320 mL.
Larger patients and smaller platelet doses decrease the platelet increment. [2] [9] These factors are adjusted for in the other methods of defining platelet refractoriness. [2] [3] [9] A 1-hour post-transfusion PI of less than 5 to 10 x 10 9 /l is considered evidence of platelet refractoriness.
Transfusion inefficacy or insufficient efficacy of a given unit(s) of blood product, while not itself a "complication" per se, can nonetheless indirectly lead to complications – in addition to causing a transfusion to fully or partly fail to achieve its clinical purpose. This can be especially significant for certain patient groups such as ...