Nokea
At birth, tunica intima of arterial wall contains all of the following, except
- A. Type IV collagen
- B. Laminin
- C. Endothelial cells
- D. Smooth muscle cells
Correct Answer: D
Rationale: Smooth muscle cells are not typically found in the tunica intima at birth.
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During a routine well child exam on a 5-year-old child, a grade II/VI, harsh, late systolic ejection murmur at the upper left sternal border that transmits to both lung fields is auscultated. The child has normal growth and development. What will the nurse practitioner suspect?
- A. Aortic stenosis (AS)
- B. Patent ductus arteriosus (PDA)
- C. Pulmonic stenosis
- D. Tricuspid atresia
Correct Answer: C
Rationale: Pulmonic stenosis may be asymptomatic with a murmur as described above.
An infant with trisomy 21 has a complete AV canal defect. Which finding associated with both conditions will the primary care pediatric nurse practitioner expect?
- A. Crackles in both lungs
- B. Hepatomegaly
- C. Oxygen desaturation
- D. Peripheral edema
Correct Answer: C
Rationale: Because infants with trisomy 21 maintain neonatal high pulmonary vascular resistance, they often do not show signs of CHF but instead will have signs of pulmonary hypertension with loud single S2 and desaturation with agitation or effort.
Clubbing is found in:
- A. Crohn's disease
- B. Bronchiectasis
- C. Rheumatic fever
- D. Infective endocarditis
Correct Answer: B
Rationale: Clubbing is commonly associated with chronic respiratory conditions such as bronchiectasis, due to chronic hypoxia and inflammation.
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.
Which of the following has the highest proportion of etiology of congenital malformations?
- A. Maternal infections
- B. Maternal illness
- C. Environmental agents
- D. Monogenic inheritance
Correct Answer: D
Rationale: Monogenic inheritance accounts for the highest proportion of congenital malformations.