Growth and Development

Question 1

Average length of a newborn

Answer 1

50 cm

Question 2

average term weight of a newborn

Answer 2

3.4 kg or 7.5 pounds

Question 3

average head circumference of a newborn

Answer 3

35 cm or 14 inches

Question 4

weight of a newborn decreases by ___% in vaginal delivery and ___% in CS delivery in the 1st week of life

Answer 4

10%, 12%

Question 5

During the first month of life, what is the weight gain per day

Answer 5

30 grams

Question 6

weight gain by 4 months, 1 year old and 2.5 year old

Answer 6

4 months = 2x birthweight
1 year = 3x birthweight
2.5 years = 4x birthweight

Question 7

4 domains in Developmental milestone

Answer 7

Gross Motor
Fine Motor
Communication and Language
Cognitive

Question 8

developmental milestone at 2 months

Answer 8

Holds head steady while sitting
Stares momentarily at spot where object disappeared
Smiles in response to face and voice (1.5 mos)

Question 9

developmental milestones at 3 months

Answer 9

pulls to sit with no head lag
Bring hands together in midline
Grasps rattle (3.5 mos)

Question 10

developmental milestones at 4 months

Answer 10

Tonic neck reflex gone
Reaches for objects
Palmar grasp reflex gone
Stares at own hand

Question 11

developmental milestones at 5 months

Answer 11

Transfers object hand to hand (5.5 mos)

Question 12

developmental milestones at 6 months

Answer 12

Sits without support
Monosyllabic babble
Rolls back to stomach (6.5 months)

Question 13

developmental milestones at 7 months

Answer 13

Inhibits to “no”
Follows 1 step command with gesture

Question 14

developmental milestones at 8 months

Answer 14

Thumb-finger grasp
Bangs 2 cubes
Uncovers toy (after seeing it hidden)

Question 15

developmental milestones at 10 months

Answer 15

Follows 1 step command without gesture
Says “mama” or “dada”
Points to object

Question 16

developmental milestones at 12 months

Answer 16

Walks alone
Turns pages of book
Speaks first real word
Egocentric symbolic play (pretends to drink from cup)

Question 17

developmental milestones at 13 months

Answer 17

Scribbles

Question 18

developmental milestones at 15 months

Answer 18

Builds tower of 2 cubes
Speaks 4-6 words

Question 19

developmental milestones at 17 months

Answer 19

Uses stick to reach toy
Pretend play with doll (gives doll bottle)

Question 20

Average age when a child can run

Answer 20

16 months

Question 21

developmental milestones at 18 months

Answer 21

Speaks 10-15 words

Question 22

average age when a child can speak 2 word sentences

Answer 22

19 months

Question 23

average age when a child can build tower of 6 cubes

Answer 23

22 months

Question 24

object permanence is achieved by what age

Answer 24

9 months

Question 25

Developmental screening starts at what month

Answer 25

9 months, 18, 24 and 30 months

Question 26

Autism spectrum disorder screening tool is used at what age for screening

Answer 26

18 and 24 months

Question 27

Visual acuity of 20/20 is reached by what age

Answer 27

4 yo

Question 28

handedness is usually established by what age

Answer 28

3 years old

Question 29

all 20 primary teeth should have erupted by what age

Answer 29

3 years old

Question 30

most common manifestation of physical abuse

Answer 30

Bruises

Question 31

Features suggestive of inflicted bruises

Answer 31

- bruising in a preambulatory infant - bruising of padded and less exposed areas (buttocks, cheeks, ears, genitalia) - patterned bruising or burns conforming to shape of an object or ligatures around the wrists - multiple bruises, especially if clearly of different ages

Question 32

Fractures that strongly suggest abuse

Answer 32

Classic metaphyseal lesions Posterior rib fractures Fractures of the scapula, sternum, and spinous processes

Question 33

Features that strongly suggest Abusive Head Trauma

Answer 33

Subdural hematomas Retinal hemorrhages Diffuse axonal injury

Question 34

most prevalent form of child maltreatment

Answer 34

Neglect

Question 35

Formula of Midparental height

Answer 35

Boys: [(MH + 5 in) + PH]/2 Girls: [MH + (PH-5 in)]/2

Question 36

Growth velocity in infancy

Answer 36

Birth-12 months: 24 cm/yr 12-24 mo: 10 cm/yr 24-36 mo: 8 cm/yr

Question 37

Peak height velocity in adolescence

Answer 37

Girls: 8 cm/yr Boys: 10 cm/yr

Question 38

Conditions associated with disproportionate U/L ratio

Answer 38

Higher U/L ratio is seen in short-limb dwarfism and Turner Syndrome Lower U/L ratio is seen in hypogonadism and Marfan Syndrome