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In neuroblastoma, metastatic spread can occur via local invasion or distant hematogenous/lymphatic routes. The LEAST common site of metastases in neuroblastoma is
- A. long bone
- B. bone marrow
- C. lung
- D. skin
Correct Answer: D
Rationale: Skin metastases are rare in neuroblastoma compared to bone, bone marrow, and lung involvement.
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A mother brings her children into the clinic and they are diagnosed with chickenpox. The mother had chickenpox as a child and is not concerned with contracting the disease when caring for her children. what type of immunity does this mother have?
- A. Active natural immunity
- B. Passive artificial immunity
- C. Passive natural immunity
- D. Active artificial immunity
Correct Answer: A
Rationale: The mother in this scenario had chickenpox as a child, which means she was exposed to the virus and developed immunity through her own immune response. This type of immunity acquired as a result of natural exposure to an infectious agent is called active natural immunity. In this case, the mother's immune system "learned" how to recognize and fight off the chickenpox virus when she was previously infected, leading to the development of memory cells that provide long-lasting protection against future infections.
Hepatitis C virus infection is a risk factor for which of the following malignancy?
- A. hepatoblastoma
- B. splenic lymphoma
- C. Hodgkin lymphoma
- D. nasopharyngeal carcinoma
Correct Answer: B
Rationale: Hepatitis C is a known risk factor for splenic lymphoma and other B-cell lymphoproliferative disorders.
In children with asthma, which of the following preoperative preparations is LEAST likely to be necessary?
- A. Increase in beta-agonist dosage
- B. Addition of systemic steroids
- C. Bronchodilator therapy
- D. None of the above
Correct Answer: D
Rationale: In stable asthmatic patients, additional interventions like systemic steroids or increased beta-agonist doses are not always necessary unless there are signs of exacerbation.
A nurse is counseling parents of a child beginning to show signs of being overweight. The nurse accurately relates which body mass index (BMI)-for-age percentile indicates a risk for being overweight?
- A. 10th percentile
- B. 9th percentile
- C. 85th percentile
- D. 95th percentile
Correct Answer: D
Rationale: The body mass index (BMI)-for-age percentile indicating a risk for being overweight is the 95th percentile. This means that if a child's BMI falls at or above the 95th percentile for their age group, they are classified as overweight. This percentile is used as a cutoff point to identify children at risk of being overweight and to guide intervention strategies such as lifestyle changes, increased physical activity, and dietary modifications. Parents should work with healthcare providers to address their child's weight status and implement appropriate measures to promote a healthy lifestyle.
A patient has iron deficiency anemia. Which of the following foods will best help provide dietary iron?
- A. Fresh fruits
- B. Dairy products
- C. Lean red meats
- D. Breads and cereals
Correct Answer: C
Rationale: Lean red meats are a great source of heme iron, which is more easily absorbed by the body compared to non-heme iron found in plant-based sources. Heme iron from animal products is particularly beneficial for individuals with iron deficiency anemia as it can help increase their iron levels more effectively. In addition to lean red meats, other animal sources of heme iron include poultry and fish.