Which of the following best describes a clinical manifestation of polycythemia vera?
peripheral edema
an elevated white blood cell count
orthopnea
an elevated hemoglobin
The Correct Answer is D
A. Peripheral edema is more common in heart failure, not polycythemia vera.
B. WBCs may be elevated, but RBC overproduction is the defining feature.
C. Orthopnea is associated with heart failure, not polycythemia vera.
D. Elevated hemoglobin is a hallmark of polycythemia vera due to excessive RBC production.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Incorrect → Insulin injections should be administered at a 90-degree angle unless the patient has minimal subcutaneous fat, in which case a 45-degree angle is used. A 25-degree angle is too shallow and may lead to improper absorption.
B. Rotating insulin injection sites helps prevent lipodystrophy and ensures consistent absorption. The patient’s decision to inject in the thigh after using the abdomen in the morning demonstrates proper site rotation.
C. Incorrect → Insulin should be administered with a U-100 insulin syringe (not a 1 mL syringe) to ensure accurate dosing.
D. Incorrect → While injecting an inch away from a previous site is reasonable, the preferred practice is rotating between different anatomical sites to prevent tissue damage and inconsistent absorption.
Correct Answer is A
Explanation
A. Obtain a prescription for supplemental oxygen. – Correct Answer. Hypoxia must be corrected first to prevent tissue hypoxia and organ failure.
B. Obtain a prescription to administer intravenous fluids. – Incorrect. IV fluids are important but oxygenation is the priority.
C. Obtain a prescription to administer insulin. – Incorrect. Insulin corrects hyperglycemia but is not the first priority over oxygenation.
D. Obtain a prescription to check the patient’s glucose level. – Incorrect. While glucose monitoring is essential, treating hypoxia takes priority.
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