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 D
Explanation
A. Hematocrit 35% (F 37%–47%; M 42%–52%): Although the hematocrit is slightly low, it is not as concerning as a low platelet count, which poses an immediate risk for bleeding.
B. Bone pain: Bone pain is common in leukemia due to bone marrow expansion, but it does not take priority over the risk of bleeding from thrombocytopenia.
C. Weight loss: Weight loss may be a symptom of leukemia, but it is not immediately life-threatening and does not take priority over a low platelet count that increases bleeding risk.
D. Platelet count 125,000/mm³ (150,000–400,000): A low platelet count is concerning in leukemia patients because it increases the risk of bleeding. Monitoring for and preventing bleeding is a high priority due to thrombocytopenia associated with leukemia.
Correct Answer is A
Explanation
A. "Aplastic anemia results from decreased bone marrow production of RBCs." Aplastic anemia is characterized by the failure of bone marrow to produce adequate red blood cells (RBCs), white blood cells, and platelets. This results in pancytopenia, which increases the risk of infections, anemia, and bleeding.
B. "Aplastic anemia is directly related to impaired liver function." Aplastic anemia is not related to liver function; it originates from the bone marrow’s inability to produce sufficient blood cells.
C. "Aplastic anemia is associated with the decreased intake of iron." Aplastic anemia is not caused by iron deficiency; it is primarily due to bone marrow failure. Iron deficiency anemia, on the other hand, results from a lack of iron intake or absorption.
D. "Aplastic anemia results in an increased rate of RBC destruction." Increased RBC destruction is characteristic of hemolytic anemia, not aplastic anemia.