Aplastic anemia is a disorder in which the bone marrow cells that develop into mature blood cells become damaged. The damaged bone marrow cells can lead to low numbers of red blood cells, white blood cells, and/or platelets. When the cause of aplastic anemia cannot be diagnosed, the cause is likely which of the following?
Radiation exposure
An autoimmune disorder
Chemotherapy drugs
Toxins
The Correct Answer is B
A. Radiation exposure: Radiation exposure can cause aplastic anemia, but if the cause is unknown, it is less likely to be due to a specific and identifiable event like radiation exposure.
B. An autoimmune disorder: When the cause of aplastic anemia cannot be diagnosed, it is often attributed to an autoimmune disorder where the body attacks its own bone marrow cells.
C. Chemotherapy drugs: Chemotherapy drugs can cause aplastic anemia, but this cause would typically be known based on the patient's medical history.
D. Toxins: Toxins can cause aplastic anemia, but like chemotherapy drugs and radiation, this cause would generally be identifiable.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. "Dietary supplements have not been tested and approved by the government." While this statement may be true, it is not directly related to the potential interaction between dietary supplements and nitroglycerin.
B. "Dietary supplements may be expensive and are not typically covered by insurance." While cost considerations are important, they are not directly related to the potential interaction
between dietary supplements and nitroglycerin.
C. "There is not enough evidence that dietary supplements are effective for erectile dysfunction."
While this statement may be true, it is not directly related to the potential interaction between dietary supplements and nitroglycerin.
D. "Dietary supplements can cause a drug-drug interaction with nitrates." Nitroglycerin is a medication commonly used for angina, and it interacts with erectile dysfunction medications
such as sildenafil (Viagra) due to its vasodilatory effects, potentially causing severe hypotension.
Therefore, it is crucial for the nurse to educate the client about the risk of interactions between dietary supplements and nitroglycerin.
Correct Answer is A
Explanation
A. Schilling test. The symptoms described are suggestive of pernicious anemia, which is typically diagnosed through a Schilling test to assess vitamin B12 absorption.
B. Erythrocyte Indices. Erythrocyte indices are used to evaluate various aspects of red blood cell characteristics and are not specific to diagnosing pernicious anemia.
C. Bone Marrow Biopsy. While bone marrow biopsy may be used to diagnose certain types of anemia, it is not the primary diagnostic test for pernicious anemia.
D. Radiologic Studies. Radiologic studies are not typically used in the diagnosis of pernicious anemia.
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