In an adult man older than 50 who presents with new-onset iron deficiency anemia and gastrointestinal bleeding, what is the most likely cause?
Celiac disease
Malignancy
Parasitic infestation
Increased systemic requirements for iron
The Correct Answer is B
Choice A reason: Celiac disease can cause iron deficiency anemia due to malabsorption, but it is less likely to present with overt gastrointestinal bleeding, especially in older adults. While it should be considered in chronic anemia, it is not the most likely cause in this context.
Choice B reason: Malignancy, particularly colorectal cancer, is a leading cause of iron deficiency anemia and gastrointestinal bleeding in men over 50. Occult or overt bleeding from a tumor can lead to chronic iron loss, and this presentation warrants urgent investigation for gastrointestinal malignancy.
Choice C reason: Parasitic infestation is a more common cause of iron deficiency anemia in children or individuals in endemic areas. It is less likely to be the cause in an older adult in a non-endemic setting, especially when gastrointestinal bleeding is present.
Choice D reason: Increased systemic requirements for iron are typically seen in growth phases, pregnancy, or chronic blood loss. In older men, this is not a common cause of iron deficiency anemia and does not explain gastrointestinal bleeding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Fluorescein angiography is primarily used to assess retinal and choroidal circulation, especially in conditions like diabetic retinopathy or macular degeneration. It is not a standard test for glaucoma evaluation.
Choice B reason: Computed tomography (CT) is used for imaging the orbit or brain in cases of trauma or suspected tumors. It is not part of routine glaucoma screening or diagnosis.
Choice C reason: A slit lamp is used to examine the anterior segment of the eye, including the cornea, iris, and lens. While it is part of a comprehensive eye exam, it does not measure intraocular pressure, which is critical for glaucoma diagnosis.
Choice D reason: Tonometry measures intraocular pressure (IOP), which is a key diagnostic criterion for glaucoma. Elevated IOP is a major risk factor for optic nerve damage in glaucoma, making tonometry an essential component of the exam.
Correct Answer is B
Explanation
Choice A reason: Celiac disease can cause iron deficiency anemia due to malabsorption, but it is less likely to present with overt gastrointestinal bleeding, especially in older adults. While it should be considered in chronic anemia, it is not the most likely cause in this context.
Choice B reason: Malignancy, particularly colorectal cancer, is a leading cause of iron deficiency anemia and gastrointestinal bleeding in men over 50. Occult or overt bleeding from a tumor can lead to chronic iron loss, and this presentation warrants urgent investigation for gastrointestinal malignancy.
Choice C reason: Parasitic infestation is a more common cause of iron deficiency anemia in children or individuals in endemic areas. It is less likely to be the cause in an older adult in a non-endemic setting, especially when gastrointestinal bleeding is present.
Choice D reason: Increased systemic requirements for iron are typically seen in growth phases, pregnancy, or chronic blood loss. In older men, this is not a common cause of iron deficiency anemia and does not explain gastrointestinal bleeding.
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