The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

Adequate platelet production.

Deficiency in intrinsic clotting system factor.

Impairment of the thrombin fibrinogen reaction.

Variable factor VIII deficiencies and platelet dysfunction.

Answer and Explanation

The Correct Answer is D

Choice A rationale:

Adequate platelet production does not explain the prolonged bleeding times in von Willebrand disease. These patients often have normal platelet counts, but their platelets do not function properly due to the absence or dysfunction of von Willebrand factor.

Choice B rationale:

Deficiency in intrinsic clotting system factor is not the primary cause of prolonged bleeding times in von Willebrand disease. The deficiency or dysfunction of von Willebrand factor, a protein that helps platelets adhere to the blood vessel walls and clot properly, is the key issue in this disorder.

Choice C rationale:

Impairment of the thrombin fibrinogen reaction does not directly relate to von Willebrand disease. This disorder primarily involves platelet dysfunction and variable factor VIII deficiencies, leading to prolonged bleeding times.

Choice D rationale:

Variable factor VIII deficiencies and platelet dysfunction are characteristic of von Willebrand disease. Factor VIII helps with blood clotting, and its deficiency, along with impaired platelet function, contributes to the prolonged bleeding times in patients with von Willebrand disease.

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Correct Answer is C

Explanation

Choice A rationale:

Enteric-coated iron is designed to be absorbed in the small intestine, not the stomach. Taking it with each meal might decrease its absorption due to interaction with food.

Choice B rationale:

Cobalamin (vitamin B12) deficiency can cause macrocytic anemia, not microcytic hypochromic anemia. Taking cobalamin with green, leafy vegetables does not address the specific iron deficiency seen in microcytic hypochromic anemia.

Choice C rationale:

Take the iron with orange juice 1 hour before meals is the correct answer. Vitamin C enhances the absorption of non-heme iron (the type of iron found in plant-based foods and iron supplements) by reducing it to a more absorbable form. Taking iron supplements with orange juice, which is high in vitamin C, can significantly improve iron absorption. Taking it before meals ensures better absorption due to reduced interaction with other dietary components.

Choice D rationale:

Decreasing the intake of antiseizure medications will not improve microcytic hypochromic anemia. Antiseizure medications do not directly influence iron absorption or the production of red blood cells.

A. Metabolic acidosis. B. Metabolic alkalosis. C. Respiratory acidosis. D. Respiratory alkalosis.

Correct Answer is C

Explanation

The correct answer is c. Respiratory acidosis.

Choice A reason: Metabolic acidosis is incorrect because the HCO3 level is normal. In metabolic acidosis, we would expect to see a decreased HCO3.

Choice B reason: Metabolic alkalosis is incorrect because the HCO3 level is normal. In metabolic alkalosis, we would expect to see an increased HCO3.

Choice C reason: The given ABG results indicate a low pH (acidosis), an elevated PaCO2 (respiratory component), and a normal HCO3 (metabolic component). The low pH and increased PaCO2 suggest respiratory acidosis.

Choice D reason: Respiratory alkalosis is incorrect because the PaCO2 level is elevated, not decreased. In respiratory alkalosis, we would expect to see a decreased PaCO2.

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The nurse recognizes that patients with von Willebrand disease are at risk for prolonged bleeding times for which reason?

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Naxlex Comprehensive Predictor Exams

Which instruction would the nurse include in the teaching plan for a patient newly diagnosed with microcytic hypochromic anemia?

Correct Answer is C

Explanation

The arterial blood gas (ABG) results for a patient who overdosed on barbiturates are pH = 7.32, PaCO2 = 52, and HCO3 = 23. Which interpretation would the nurse rely on when planning the patient's care?

Correct Answer is C

Explanation

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