Growth

Question 1

average weight of a UK baby at birth?

Answer 1

3.5kg

Question 2

another word for the 50th centile on a growth chart?

Answer 2

the average/mean

Question 3

if 100 people were measured, how many would be within 1 standard deviation of the 50th centile?

Answer 3

68

Question 4

what is the z score?

Answer 4

number of sd’s away from the mean

Question 5

have growth charts shifted to the right or left over time?

Answer 5

left

Question 6

how fast do babies grow a year

Answer 6

20%

Question 7

what drives a baby’s growth?

Answer 7

nutrition

Question 8

what drives growth from 3 to puberty?

Answer 8

GH

Question 9

when should you start measuring height?

Answer 9

2yrs

Question 10

how fast do children grow per yr?

Answer 10

5cm per yr

Question 11

if a point is within 1/4 space of the centile line, what is it classed as?

Answer 11

on the centile line

Question 12

if a point is outwith a 1/4 space of the centile line, what is it classed as?

Answer 12

between centile X + Y

Question 13

what is a centile space?

Answer 13

the distance between 2 centile lines

Question 14

average age for a girl to enter puberty?

Answer 14

11

Question 15

what is precocious puberty

Answer 15

normal pubertal development occurring early

Question 16

when would a girl be classed as having precocious puberty?

Answer 16

<8yrs

Question 17

when would a boy be classed as having precocious puberty?

Answer 17

<9yrs

Question 18

when would a boy be classed as having pubertal delay?

Answer 18

age 14 +

Question 19

when would a girl be classed as having pubertal delay?

Answer 19

age 13 +

Question 20

what is thelarche

Answer 20

breast budding

Question 21

what is adrenarche

Answer 21

body hair and odour

Question 22

what is the determinant of puberty in girls

Answer 22

breast formation/ thelarche

Question 23

what is the determinant of puberty in boys?

Answer 23

testicular volume

Question 24

what testicular volume in a 14yr old boy would indicate pubertal delay?

Answer 24

<14

Question 25

why do girls with precocious puberty tend to have a higher BMI?

Answer 25

they produce more leptin which is a hormone made from fat

Question 26

why do boys grow taller than girls?

Answer 26

more testosterone
faster peak height velocity
taller pre-puberty

Question 27

what to ask in FH for a child with delayed growth?

Answer 27

parental heights

when parents started puberty

Question 28

main question to ask a child with suspected growth delay?

Answer 28

are you worried about your growth?

Question 29

what investigations are done into growth delay?

Answer 29

bloods- FH/LSH, growth factors, tesosterone
karyotype
TFTs
bone age
dynamic function test
MRI brain
USS uterus

Question 30

what is the difference between genetic short stature and constitutional growth delay?

Answer 30

genetic- inherited short stature from parents, normal bone age, no endocrine issue
CGD- late maturation causes it, delayed bone age

Question 31

are you more likely to be tall or short if you are of a high income?

Answer 31

tall

Question 32

what child malignancy can cause GH deficiency and why?

Answer 32

CNS as radiation can damage pituitary