Nokea
Causes of pancytopenia and splenomegaly include:
- A. Low-grade non-Hodgkin's lymphoma
- B. Gaucher's disease
- C. Alcoholic cirrhosis
- D. BI2 deficiency
Correct Answer: B
Rationale: Gaucher's disease, a lysosomal storage disorder, can cause pancytopenia and splenomegaly due to bone marrow infiltration and hypersplenism.
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The severity of symptoms of Ebstein anomaly and the degree of cyanosis are high and depend on the extent of
- A. displacement of the tricuspid valve
- B. cardiac dysrhythmias
- C. atrial right-to-left shunt
- D. pulmonary vascular resistance
Correct Answer: A
Rationale: Displacement of the tricuspid valve is a key determinant of symptom severity in Ebstein anomaly.
The following are common side effects of sildenafil EXCEPT
- A. flushing
- B. elevated liver function tests
- C. headache
- D. myalgia
Correct Answer: B
Rationale: Elevated liver function tests are not a common side effect of sildenafil.
Possible causes of isosexual precocious puberty in a 6-year-old girl are:
- A. McCune-Albright syndrome
- B. Congenital adrenal hyperplasia (CAH)
- C. Ovarian tumour
- D. Hypothalamic hamartomas
Correct Answer: D
Rationale: Hypothalamic hamartomas can cause precocious puberty by secreting gonadotropin-releasing hormone (GnRH) prematurely.
A 4-month-old infant with a ventricular septal defect (VSD) has dropped from the 20th percentile to the 5th for weight. What will the nurse practitioner recommend?
- A. Adding solid foods to the infant's diet to increase caloric intake
- B. Fortifying breast milk to increase the number of calories per ounce
- C. Stopping breastfeeding and giving 30 kcal/ounce formula
- D. Supplementing breastfeeding with 24 kcal/ounce formula
Correct Answer: B
Rationale: Infants with heart defects who have congestive heart failure (CHF) may need modification of formula or breast milk to increase calories. Fortifying breast milk is the first and best option.
The most common cause of bacterial meningitis in children under 5 years is:
- A. Neisseria meningitidis
- B. Haemophilus influenzae
- C. Streptococcus pneumoniae
- D. Listeria monocytogenes
Correct Answer: C
Rationale: Streptococcus pneumoniae is the leading cause of bacterial meningitis in children under 5 years, especially in those who are not immunized.