A nurse is planning care for a client who is to receive one unit of packed RBCs. Within which of the following time spans must the nurse complete the infusion?
2 hr
8 hr
6 hr
4 hr
The Correct Answer is D
A. 2 hr: While some patients may tolerate faster infusion rates, the maximum safe time is 4 hours, and there is no requirement to complete it in 2 hours.
B. 8 hr: Blood cannot be left out for 8 hours due to the increased risk of bacterial growth and contamination.
C. 6 hr: Infusing blood over 6 hours exceeds the safe time limit and poses a risk of bacterial contamination.
D. 4 hr: To reduce the risk of bacterial contamination, a unit of packed RBCs must be transfused within 4 hours of starting the infusion. This time frame ensures that the blood remains safe for the patient while minimizing exposure to room temperature.
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Correct Answer is C
Explanation
A. Folate: Folate is important for red blood cell production but does not address the Vitamin B12 deficiency seen in pernicious anemia.
B. Vitamin C: Vitamin C does not impact pernicious anemia as it is not involved in Vitamin B12 absorption.
C. Vitamin B12: Pernicious anemia occurs due to a lack of intrinsic factor, which is necessary for Vitamin B12 absorption. After a total gastrectomy, intrinsic factor is no longer produced, requiring Vitamin B12 supplementation.
D. Iron: Iron deficiency anemia is different from pernicious anemia, which specifically requires Vitamin B12 supplementation.
Correct Answer is B
Explanation
A. Skin color: While skin color can show signs of reactions, it is a secondary measure. Temperature changes can be more immediately significant in assessing transfusion reactions.
B. Temperature: Temperature is the priority because a fever can indicate an infection or may develop as a sign of a transfusion reaction. Monitoring baseline temperature helps quickly identify febrile reactions to the transfusion.
C. Hemoglobin level: Although important to verify, the hemoglobin level is part of the overall assessment but does not directly predict or prevent transfusion reactions.
D. Fluid intake: Fluid intake is monitored for fluid overload risk but is not as immediate in the prevention of transfusion reactions.