A nurse is collecting data from a 6-month-old infant in the well child clinic.
Which of the following findings should the nurse expect?
Infant's birth weight is tripled.
Lateral incisors are present.
Posterior fontanel is closed.
Infant sits well without support.
The Correct Answer is C
Choice A rationale
The infant's birth weight typically doubles by 4-6 months and triples by 1 year of age. If an infant's weight has tripled at 6 months, it may indicate overnutrition or an underlying health condition.
Choice B rationale
Lateral incisors usually appear between 9 to 13 months. At 6 months, the central incisors are more likely to be emerging.
Choice C rationale
The posterior fontanel typically closes by 2 to 3 months of age. Therefore, by 6 months, it is expected to be closed.
Choice D rationale
Infants usually sit without support around 8 months. At 6 months, they may sit with support or briefly without support but not consistently.
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Correct Answer is A
Explanation
Choice A rationale
The hepatitis B vaccine is recommended for all newborns within 24 hours of birth to provide early protection against the hepatitis B virus.
Choice B rationale
The PCV (Pneumococcal Conjugate Vaccine) is administered as a series of four doses, typically at 2, 4, 6, and 12-15 months of age.
Choice C rationale
The first dose of the DTaP (Diphtheria, Tetanus, and Pertussis) vaccine is typically given at 2 months of age, not during the initial well-baby visit after birth.
Choice D rationale
The MMR (Measles, Mumps, and Rubella) vaccine is recommended at 12-15 months of age and again at 4-6 years, not at 6 months.
Correct Answer is A
Explanation
Choice A rationale
Collecting objects like rocks reflects the interest in categorizing and organizing, which aligns with the industry vs. inferiority stage for school-age children.
Choice B rationale
Wanting to do well in school also fits with the industry vs. inferiority stage, where children gain pride from achieving tasks and being competent.
Choice C rationale
Doing simple math problems in one's head indicates cognitive development but doesn't directly align with the psychosocial development focus.
Choice D rationale
Following rules set by parents is important, but it's more about conforming to authority rather than indicating psychosocial development specific to industry vs. inferiority.