The nurse is reviewing laboratory values for a patient with thrombocytopenia associated with ITP. Which result would concern the nurse the most?
Red blood cells (RBCs) 5.0 million/mm3 (F 4.2-5.4; M 4.7-6.1)
Hemoglobin 14.5 g/100 mL (F 12-16: M 14-18)
Platelets 50,000/mm3 (150.000-400,000)
White blood cells (WBCs) 7,400/mm3 (5,000-10,000)
The Correct Answer is C
A. Red blood cells (RBCs) 5.0 million/mm³ (F 4.2–5.4; M 4.7–6.1): This RBC count is within normal limits and does not indicate a concern related to thrombocytopenia.
B. Hemoglobin 14.5 g/100 mL (F 12–16; M 14–18): Hemoglobin is within normal limits and is not an immediate concern for a patient with ITP, as thrombocytopenia primarily affects platelets, not hemoglobin levels.
C. Platelets 50,000/mm³ (150,000–400,000): A platelet count of 50,000/mm³ is significantly below the normal range and poses a risk for bleeding, which is the primary concern in ITP (immune thrombocytopenic purpura).
D. White blood cells (WBCs) 7,400/mm³ (5,000–10,000): The WBC count is normal and not directly related to thrombocytopenia in ITP, which specifically affects platelets.
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Correct Answer is B
Explanation
A. Thyroid disease: While some thyroid diseases may indirectly contribute to anemia, thyroid disease itself does not directly cause low hemoglobin and hematocrit.
B. Anemia: Low hemoglobin and hematocrit levels indicate anemia, which can be caused by various factors, including blood loss, iron deficiency, or chronic disease.
C. Acute bronchitis: Acute bronchitis typically affects respiratory function and does not directly cause a decrease in hemoglobin or hematocrit.
D. Hemochromatosis: Hemochromatosis is characterized by excess iron in the body, often resulting in elevated rather than decreased hemoglobin and hematocrit.
Correct Answer is D
Explanation
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.