Which of the following is least considered to be a normal variant in newborns?
- A. Milia
- B. Neonatal pustular melanosis
- C. Dermal melanocytosis
- D. Infantile acropustulosis
Correct Answer: D
Rationale: Infantile acropustulosis is not considered a normal variant in newborns; it is a rare condition characterized by recurrent pustular eruptions.
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What finding would the nurse expect when measuring blood pressure on all four extremities of a child with coarctation of the aorta?
- A. Blood pressure higher on the right side
- B. Blood pressure higher on the left side
- C. Blood pressure lower in the arms than in the legs
- D. Blood pressure lower in the legs than in the arms
Correct Answer: D
Rationale: The characteristic symptoms of coarctation of the aorta are a marked difference in blood pressure and pulses between the upper and lower extremities. Pressure is increased proximal to the defect and decreased distal to the coarctation.
FISH is helpful in diagnosing:
- A. Prader-Willi syndrome
- B. Di George syndrome
- C. Klinefelter's syndrome
- D. Turner's syndrome
Correct Answer: B
Rationale: FISH (Fluorescence In Situ Hybridization) is particularly useful in diagnosing DiGeorge syndrome, which involves microdeletions on chromosome 22.
Which among the following beta-blockers is not potent than propranolol (considering propranolol = 1)?
- A. Carvedilol
- B. Metoprolol
- C. Bisoprolol
- D. Labetalol
Correct Answer: D
Rationale: Labetalol has a lower beta-blocking potency compared to propranolol, especially considering it also has alpha-blocking activity.
Proteins found in muscle fibers include:
- A. Vimentin
- B. Saccharin
- C. Keratin
- D. Desmin
Correct Answer: D
Rationale: Desmin: Desmin is an intermediate filament protein found in muscle cells, providing structural support and maintaining the integrity of muscle fibers.
Causes of a loin mass and haematuria:
- A. Wilm's tumour
- B. Polycystic kidney disease
- C. Pyonephrosis
- D. Renal vein thrombosis
Correct Answer: A
Rationale: Wilm's tumour is a common cause of a loin mass and haematuria in children. Polycystic kidney disease and pyonephrosis can also present similarly.