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 B
Explanation
A. Phalitis: This term is not commonly used and does not specifically refer to swelling in the hands and feet.
B. Dactylitis: Dactylitis is a common manifestation of sickle cell disease in infants, characterized by painful swelling of the hands and feet due to vaso-occlusive episodes.
C. Erythromelaglia: Erythromelalgia is a condition characterized by burning pain, redness, and warmth in the extremities, but it is not typically associated with sickle cell disease.
D. Dyshidrotia: This term is not commonly used in medical terminology and does not specifically refer to swelling in the hands and feet.
Correct Answer is A
Explanation
A. Three to seven days after menses stops. This is the best time to perform BSE as the breasts are least likely to be swollen and tender during this period.
B. Prior to the beginning of menses. Breasts are more likely to be swollen and tender before menstruation, which can make it harder to detect abnormalities.
C. On the second day of menstruation. During menstruation, hormonal changes can affect breast tissue, making the examination less reliable.
D. On the same day every month. For those with regular menstrual cycles, it is recommended to perform BSE a few days after menses stops for more accurate results.
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