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Pediatric Growth and Development Flashcards

7 cards from real MCCQE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Pediatric Growth and Development flashcards as text

  1. A term newborn is noted to have a head circumference of 32 cm. The expected head circumference at birth is approximately:

    Answer: 34 cm

    The average head circumference at birth is approximately 33–35 cm (mean ~34 cm), reflecting normal brain size at term.

  2. Which developmental screening tool is validated for use in Canadian primary care settings for children 0–5 years?

    Answer: Ages and Stages Questionnaires (ASQ)

    The Ages and Stages Questionnaires (ASQ) is a widely validated, parent-completed screening tool recommended for use in Canadian primary care for children aged 0–66 months.

  3. A 6-year-old boy has a height of 105 cm. His father is 170 cm and his mother is 160 cm. What is the mid-parental height target for this boy?

    Answer: 172 cm

    Mid-parental height for boys = (father's height + mother's height + 13 cm) / 2 = (170 + 160 + 13) / 2 = 171.5 cm ≈ 172 cm.

  4. At which age would you expect a child to begin stranger anxiety?

    Answer: 6–9 months

    Stranger anxiety typically emerges between 6 and 9 months as the infant develops object permanence and preferential attachment to caregivers.

  5. A 3-year-old girl has a bone age of 5 years, elevated LH/FSH, and advanced pubertal staging. MRI of the brain is most likely to show:

    Answer: Hypothalamic hamartoma

    Hypothalamic hamartoma is the most common identifiable CNS cause of central precocious puberty in young children, causing premature GnRH pulsatility.

  6. A 13-year-old male has Tanner stage 2 pubic hair but Tanner stage 4 genital development. This dissociation most likely reflects:

    Answer: Normal variation — adrenarche and gonadarche are independent processes

    Adrenarche (pubic hair, driven by adrenal androgens) and gonadarche (genital development, driven by gonadotropins) are independent processes that can progress at different rates.

  7. An exclusively breastfed 4-month-old gains 20 g/day. How does this compare to expected growth?

    Answer: Normal; expected is 20–30 g/day

    Breastfed infants normally gain approximately 20–30 g/day between 3 and 6 months; 20 g/day is at the lower end but within the acceptable range.