MCCQE Pediatric Growth and Development 2

Question 1

A 9-month-old infant cannot sit without support and does not transfer objects between hands. Which developmental domain is most delayed?

Accepted Answer

Gross motor

Answer

Sitting without support is a gross motor milestone expected by 6–7 months; failure to achieve this by 9 months indicates gross motor delay.

Question 2

A 3-year-old boy is at the 5th percentile for height. His growth velocity over the past year was 5 cm. Which finding would most suggest constitutional growth delay over growth hormone deficiency?

Accepted Answer

Bone age delayed by 2 years with normal growth velocity

Answer

Constitutional growth delay is characterized by delayed bone age with a normal growth velocity and a family history of late puberty.

Question 3

Which Tanner stage describes the onset of breast development (thelarche) in females?

Accepted Answer

Tanner stage 2

Answer

Tanner stage 2 marks the beginning of breast development with a small breast bud, signaling the start of puberty in girls.

Question 4

A 2-year-old uses 2-word phrases and has a vocabulary of 50 words. Which assessment is most appropriate?

Accepted Answer

Reassure parents; development is normal

Answer

By age 2, children are expected to have at least 50 words and use 2-word combinations, so this child's language development is within normal limits.

Question 5

At what age does a child typically develop the pincer grasp (thumb-forefinger apposition)?

Accepted Answer

9 months

Answer

The mature pincer grasp develops around 9–10 months, allowing precise grasping of small objects between thumb and index finger.

(MCCQE) Medical Council of Canada Qualifying Examination Practice Test

(MCCQE) Medical Council of Canada Qualifying Examination Practice Test

MCCQE Pediatric Growth and Development 2