1. What is the maximum volume of blood that can be collected
from a 110-lb donor, including samples for
processing?
a. 450 mL
b. 500 mL
c. 525 mL
d. 550 mL - ANS c. 525 mL
*2. How often can a blood donor donate whole blood?
a. Every 24 hours
b. Once a month
c. Every 8 weeks
d. Twice a year - ANS c. Every 8 weeks
3. When RBCs are stored, there is a "shift to the left." This
means:
a. Hemoglobin oxygen affinity increases, owing to an
increase in 2,3-DPG.
b. Hemoglobin oxygen affinity increases, owing to a decrease
in 2,3-DPG.
c. Hemoglobin oxygen affinity decreases, owing to a decrease
in 2,3-DPG.
d. Hemoglobin oxygen affinity - ANS b. Hemoglobin oxygen affinity increases, owing to a
decrease
in 2,3-DPG.
*4. The majority of platelets transfused in the United States today are:
a. Whole blood-derived platelets prepared by the
platelet-rich plasma method.
b. Whole blood-derived platelets prepared by the buffy
coat method.
c. Apheresis platelets.
d. Prestorage pooled platelets. - ANS c. Apheresis platelets.
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