COMPLETE QUESTIONS AND ANSWERS.
◍ 21 days. Ans: ACD/CPD/CPD2
◍ 35 days. Ans: CPDA-1
◍ 42 days. Ans: Additives
◍ rejuvenating solutions. Ans: restores 2,3 DPG and ATP; can freeze
unit or, if not used in 24hrs, can store at 1-6C--must wash cells before
transfusion to remove solution
◍ autologous donation. Ans: no age limit
Hct 33% or greater
Hgb 11 g/dL or greater
collection >72hr from surgery or transfusion
300-404mL labeled as Blood cells low volume
◍ hemapheresis/ apheresis collection. Ans: process of using instruments
to selectively remove needed component & return components not
,needed; donor criteria same as for whole blood; limits donor exposure;
hematopoetic progenitor cells; therapeutic benefits
◍ cytapheresis. Ans: cells (platelets, granulocytes and leukocytes, and
RBCs)
◍ donations at least 2 days apart and no more than 2 in 7 days; if RBCs
can't be returned must wait 8 weeks. Ans: platelets, granulocytes and
leukocytes cytapheresis
◍ deferral 16 weeks for 2 units; 2 units must not decrease donor's Hct
below 30% or Hgb below 10g/dL. Ans: RBCs cytapheresis
◍ tests performed on donor blood. Ans: ABO, Rh (weak D), Ab screens,
Serologic tests, viral diseases
◍ severe shock; blood loss greater than 25% blood volume; need RBCs
for oxygen and plasma for volume. Ans: whole blood
◍ packed cells (RBCs). Ans: red cells with plasma removed; same
oxygen carrying capacity but less volume;
◍ 80% or less Hct. Ans: indicates insufficient plasma removal
, ◍ 55-65% Hct. Ans: Additive solution used
◍ 1 unit raises Hgb and Hct by how much. Ans: Hgb 1g
Hct 3%
◍ changes in plasma during storage (1-6C). Ans: NH₄, K ↑
pH, Na ↓
◍ packed cells below 10C or seal disturbed. Ans: unit cannot be
returned
◍ washed cells. Ans: removing the plasma by successive saline washes;
used to prevent allergic response to plasma proteins and anaphylactic
shock in IgA deficient patients with anti-IgA ; removes anti-HPA-la from
maternal blood used to neonatal transfusion; removes complement
◍ washed cells expires. Ans: 24hrs after seal of original unit broken
◍ leukoreduced. Ans: ≤ 5 x 10⁶ leukocytes with final hgb from 41-51g
◍ 50-60g. Ans: hgb in apheresis RBCs