The nurse is caring for a child who is suspected to have Legg-Calvé-Perthes disease. The nurse should prepare the child for which of the following diagnostic procedures?
MRI
radiographs
genetic testing
bone biopsy
The Correct Answer is B
Rationale:
A. MRI may be used in some cases but is not the primary diagnostic tool for Legg-Calvé-Perthes disease.
B. Radiographs (X-rays) are the standard first-line imaging study to evaluate Legg-Calvé-Perthes disease by showing changes in the femoral head.
C. Genetic testing is not relevant to diagnosing this condition.
D. Bone biopsy is invasive and not indicated for diagnosing Legg-Calvé-Perthes disease.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Rationale:
A. A necrotic lesion is not typical of Lyme disease; this may indicate another type of infection, like spider bite or cellulitis.
B. Lyme disease often presents with erythema migrans, a target-like or bull's-eye rash with central clearing and a red outer border around the tick bite.
C. A diffuse rash two months after exposure is not a common presentation of Lyme disease. Later symptoms include joint pain, neurological issues, or cardiac signs.
D. A linear rash of papules and vesicles that appears within 1–3 days is more typical of contact dermatitis, such as poison ivy, not Lyme disease.
Correct Answer is D
Explanation
Rationale:
A. Genetic predisposition plays a role, with certain HLA types increasing susceptibility to type 1 diabetes.
B. Type 1 diabetes is primarily an autoimmune disorder in which the body’s immune system attacks and destroys insulin-producing beta cells in the pancreas.
C. Environmental triggers, such as viral infections or early exposure to cow's milk, may contribute to the onset of the disease in genetically predisposed individuals.
D. All of the listed factors are believed to interact in the development of type 1 diabetes, making this the most accurate choice.
E. This contradicts the current understanding of the multifactorial causes of the disease.
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