The nurse suspects that a patient has polycythemia vera based on which finding in the patient's laboratory reports? Select all that apply.
One, some, or all responses may be correct.

Increased cobalamin levels.

Decreased histamine levels.

Increased hemoglobin levels.

Increased red blood cell levels.

Answer and Explanation

Correct Answer : C,D

Choice A rationale:
Increased cobalamin levels are not indicative of polycythemia vera. Polycythemia vera is characterized by an increase in the total red blood cell mass. Elevated cobalamin levels are not specific to this condition.
Choice B rationale:
Decreased histamine levels are not a diagnostic marker for polycythemia vera. Histamine levels are not typically associated with this disorder.
Choice C rationale:
Increased hemoglobin levels are a significant finding in polycythemia vera. Polycythemia vera is a disorder characterized by an abnormal increase in the number of red blood cells, leading to elevated hemoglobin levels.
Choice D rationale:
Increased red blood cell levels are a hallmark feature of polycythemia vera. The increased production of red blood cells leads to elevated red blood cell levels, which is a key diagnostic indicator for this condition.

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Correct Answer is D

Explanation

Choice A rationale:
Triple-drug therapy is not the standard treatment for pernicious anemia after a gastrectomy. Pernicious anemia is primarily caused by vitamin B12 deficiency due to the absence of intrinsic factor, which is essential for vitamin B12 absorption.
Choice B rationale:
IV therapy is a broad term and does not specify the treatment for pernicious anemia. In the context of pernicious anemia, cobalamin replacement therapy administered via intramuscular injections is the preferred treatment.
Choice C rationale:
Quadruple-drug therapy is not a recognized treatment for pernicious anemia. The primary treatment for pernicious anemia involves cobalamin replacement therapy to address the vitamin B12 deficiency.
Choice D rationale:
Cobalamin replacement therapy is the appropriate treatment for pernicious anemia after a gastrectomy. Since the patient lacks intrinsic factor, which is necessary for vitamin B12 absorption, cobalamin replacement therapy bypasses the need for intrinsic factor and provides the necessary vitamin B12 directly.

A. pH = 7.46, PaCO2 = 44 mm Hg, PaO2 = 95 mm Hg, and HCO3 = 36 mEq/L. B. pH = 7.27, PaCO2 = 70 mm Hg, PaO2 = 80 mm Hg, and HCO3 = 26 mEq/L. C. pH = 7.30, PaCO2 = 35 mm Hg, PaO2 = 70 mm Hg, and HCO3 = 20 mEq/L. D. pH = 7.52, PaCO2 = 24 mm Hg, PaO2 = 85 mm Hg, and HCO3 = 24 mEq/L.

Correct Answer is D

Explanation

The correct answer is choice d. pH = 7.52, PaCO2 = 24 mm Hg, PaO2 = 85 mm Hg, and HCO3 = 24 mEq/L.

Rationales:

Choice A rationale:

pH = 7.46: This value is slightly alkalotic.
PaCO2 = 44 mm Hg: This is within the normal range (35-45 mm Hg), indicating that the respiratory system is not contributing to alkalosis.
PaO2 = 95 mm Hg: This is a normal oxygen level.
HCO3 = 36 mEq/L: This is elevated, indicating metabolic alkalosis rather than respiratory alkalosis.

Choice B rationale:

pH = 7.27: This value is acidic, indicating acidosis.
PaCO2 = 70 mm Hg: This is elevated, indicating respiratory acidosis.
PaO2 = 80 mm Hg: This is slightly low, indicating mild hypoxemia.
HCO3 = 26 mEq/L: This is within the normal range, indicating no metabolic compensation.

Choice C rationale:

pH = 7.30: This value is acidic, indicating acidosis.
PaCO2 = 35 mm Hg: This is within the normal range, indicating that the respiratory system is not contributing to acidosis.
PaO2 = 70 mm Hg: This is low, indicating hypoxemia.
HCO3 = 20 mEq/L: This is low, indicating metabolic acidosis.

Choice D rationale:

pH = 7.52: This value is alkalotic.
PaCO2 = 24 mm Hg: This is low, indicating respiratory alkalosis.
PaO2 = 85 mm Hg: This is a normal oxygen level.
HCO3 = 24 mEq/L: This is within the normal range, indicating no metabolic compensation.

Choice D corresponds with respiratory alkalosis because the pH is alkalotic, and the PaCO2 is low, indicating that the respiratory system is causing the alkalosis. The HCO3 is within the normal range, showing no metabolic compensation.

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The nurse suspects that a patient has polycythemia vera based on which finding in the patient's laboratory reports? Select all that apply. One, some, or all responses may be correct.

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Naxlex Comprehensive Predictor Exams

Which treatment is likely to be planned for a patient who develops pernicious anemia after a gastrectomy?

Correct Answer is D

Explanation

Which arterial blood gas (ABG) data corresponds with a patient's clinical manifestations of respiratory alkalosis?

Correct Answer is D

Explanation

Rationales:

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The nurse suspects that a patient has polycythemia vera based on which finding in the patient's laboratory reports? Select all that apply.
One, some, or all responses may be correct.