predonation

predonation

Transfusion medicine The depositing of one or more units of packed RBCs for autologous blood transfusion before an anticipated need–eg, elective surgery. See Autologous donation, Leapfrog method.
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Within these circumstances, it is difficult to ensure that predonation test results for "HIV, HBV, HCV, syphilis, and other locally transmitted infections, as applicable" would be generated within 48 hours, or otherwise repeated at donation, as recommended by interim guidance from WHO (http://apps.
Consequently, restoring the Hb concentration to predonation concentrations may require an average of 12 - 18 weeks in men, and 14 - 24 weeks or more in women of childbearing age.
In addition to multiple predonation screening questions, in developed countries collected units are subjected to extensive laboratory screening, including nucleic acid testing for HIV/hepatitis C virus, and more recently hepatitis B virus and West Nile virus.
All of the BMI subgroups had a 70%-75% lower glomerular filtration rate at the time of follow-up than at the time of their predonation measurement.
As it is an autologous blood product there is no risk of infectious disease transmission or clerical errors, thus making it a safe product with no time consuming visits to the blood bank for predonation.
The potential donor progresses through predonation education, interview assessment, and confidential unit exclusion.
Six months after surgery, he's well on his way back to his predonation self.
But predonation can involve a number of trips to the blood bank, can cause the patient to be anemic by the time of surgery, can be associated with bacterial contamination, and can pose a risk of clerical error resulting in transfusion of the blood to the wrong patient.
Initial studies on this use of erythropoietin are now underway at Case Western Reserve University in Cleveland, where high doses of the hormone have been found to increase the average blood predonation from 4 units to 5.
In blood donation centers, a predonation Hb measurement of blood donors is required by most countries to protect anemic donors, and to ensure adequate Hb content of blood units.