growth and physical development Flashcards

1
Q

intrauterine growth depends on

A

fetal problems
maternal
placental

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2
Q

what do you plot if a baby is premature?

A

plot the corrected age which is less than the chronological age -

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3
Q

with endocrine problems height or weight gets more affected?

A

HEIGHT

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4
Q

head circumference at birth is on average

A

35 cm

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5
Q

How fast does HC increase in the first year

A

12 cm in the first 12 months

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6
Q

average Wt for babies at birth

A

remember 35cm, 3.5 kg for weight
5 months doubles
1 year triples
2 year quadruples

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7
Q

Average height at birth

A

50 cm -
1 year 76 cm
4 years doubles

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8
Q

after the intrauterine growth what is the most rapid growth period

A

the first year of life!

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9
Q

Childhood > 3 years before adolescence - what is the tempo of growth

A

growth is >6cm/year

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10
Q

3% of children fall

A

below the 3rd percentile

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11
Q

when do you investigate a child for abnormal growth”

A
  • Ht «3% ile
  • abnormal growth velocity
  • ## cross %tiles after age 2
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12
Q

midparental height is if male

A

= father’s ht + (mother’s ht +12.5cm)/2

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13
Q

midparental height is if male

A

= (father’s ht- 12.5cm) + (mother’s ht)/2

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14
Q

first sign of puberty in females

A

breast development THEN growth spurt

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15
Q

first sign of puberty in males

A

Testicular enlargement

peak growth spurt is later -

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16
Q

late puberty is more common in

A

males

17
Q

menses happen when

A

growth is almost complete

18
Q

most causes of disproportionate short stature are

A

Bony in nature

upper/lower segment ratio

19
Q

arm span should be within

A

5 cm of height

20
Q

upper to lower segment ratio =

A

1 if > 1 can mean achondroplasia

21
Q

when is growth velocity NORMAL

A
  • constitutional delay

- familial short stature

22
Q

difference between familial SS and CD

A

FSS: onset of puberty is normal, in CD: onset is late
FSS: final adult height is short, in CD: FAH is near target
FSS M=F, CD M»»F
FSS BA = CA, in CD bone age is delayed

23
Q

bone age is similar to

A

Tanner stage

24
Q

DDx for slowed growth velocity

A
  • Hypothyroid
  • Hypopituitary GH deficiency
  • cortisol excess