A 2-year-old is suspected of having cellulitis of the finger. Which organism or condition is the most likely cause of the infection?
parainfluenza virus
respiratory syncytial virus
Escherichia coli
Streptococcus species
The Correct Answer is D
Rationale:
A. Parainfluenza virus typically causes respiratory illnesses like croup, not skin infections.
B. Respiratory syncytial virus (RSV) primarily affects the lower respiratory tract in infants and young children and is unrelated to skin infections.
C. Escherichia coli is more commonly associated with gastrointestinal and urinary tract infections, not skin infections.
D. Streptococcus species, particularly Streptococcus pyogenes (Group A strep), are a common cause of cellulitis, especially in children. The infection often enters through breaks in the skin, leading to inflammation and infection of the deeper dermis and subcutaneous tissue.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. Regular monitoring of T4 levels is necessary to ensure appropriate dosing and management of thyroid hormone replacement therapy.
B. Congenital hypothyroidism is a permanent condition that requires lifelong treatment with levothyroxine to prevent developmental delays and intellectual disability.
C. Early initiation of treatment, ideally within the first 2 weeks of life, is critical to prevent neurologic damage.
D. In congenital hypothyroidism, the thyroid gland is usually absent or severely underdeveloped, so it will not mature with time. Lifelong hormone replacement is necessary. This response indicates a misunderstanding and the need for further teaching.
Correct Answer is B
Explanation
Rationale:
A. Presence of nits on the hair shaft is associated with pediculosis capitis (head lice), not scabies.
B. Line-like marks on the hands (especially between fingers) are characteristic of scabies, which is caused by mites burrowing under the skin.
C. Small, red bumps on the scalp are also associated with head lice, not scabies.
D. Pimples on the trunk can occur with various skin conditions, but burrow lines are more specific and diagnostic for scabies.
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