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. RBC's: Red blood cells (RBCs) are not indicative of Hodgkin’s lymphoma; they are involved in oxygen transport throughout the body and are not a specific marker for any lymphoma.
B. Bence-Jones Cells: Bence-Jones proteins are light chain proteins found in the urine of patients with multiple myeloma, not Hodgkin’s lymphoma.
C. Stem Cells: Stem cells are progenitor cells that can develop into various blood cell types but are not characteristic of Hodgkin’s lymphoma specifically. Reed-Sternberg cells, not stem cells, are the hallmark of this disease.
D. Reed-Sternberg Cell: Reed-Sternberg cells are large, abnormal B cells that are characteristic of Hodgkin’s lymphoma. Their presence in lymph node tissue is a key diagnostic feature of the disease.
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.