Growth Charts Flashcards

1
Q

How should Babies be weighed?

A
  • without any clothes or nappy
  • children older than two can be weighed in vest and pants but no shoes, footwear and dolls or teddies
  • only class III clinical electronic scales in metric setting should be used
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2
Q

How to measure head circumference?

A
  • should be measured using a narrow plastic or disposable paper tape
  • measurement should be taken where the head circumference is widest
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3
Q

How to measure length

A
  • measure length before the age of 2 if concenrent
  • measure without nappy or footwear
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4
Q

How to measure height?

A
  • measured from two years of age using a rigid rule with T piece
  • ensure heels, bottom. bacl and head are touching the apparatus with eyes and ears at 90o
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5
Q

How to plot the growth chart?

A
  • record measurement and date in ink, plot in pencil
  • use dot
  • age errors are commonest source of plotting mistakes, use a calender or date wheel to calculate age
    • age in weeks for first 6-12 months
    • clendar months thereafter
      • count forward from the date of birth to current moth using date of birth
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6
Q

What do the centiles show?

A
  • optimum range of weights and heights
  • describes the percentage expected to be below that line
    • 50% below 50th
    • 91% below the 91st
    • 1 in 250 below 0.4th
  • half of all children should be between 25th-75th centile
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7
Q

Centile terminology

A
  • if the [pint is exactly on the centile line or within 1/4 of a space of the centile line, the child is described as being on that centile e.g. 91st centile
  • if not they should be described as being between centile x and Y e.g. between the 75th -91st centile
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8
Q

Plotting in the first two weeks

A
  • birth weight centiles still based on UK 1990 data
  • WHO charts start from 2 weeks
  • no centile lines between birth (0weeks) and 2 weeks
  • allows for weight loss and regain before 2 weeks
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9
Q

What is a term infant described as in weeks? and where is it plotted in the graph?

A
  • 37 weeks or more at age 0 weeks
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10
Q

Calculating percentage weight loss

A

Weight change

= currrent weight - birth weight

percentage weight loss

= weight loss / birth weight x100%

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11
Q

Assessing neonatal weight loss

A
  • most babies lose some weight after birth
    • 80% will have regained this by 2 weeks of age
  • fewer than 5% of babies lose more than 10%
    • only 1 in 50 are 10% lighter at 2 weeks
  • a baby 10% or more below birth weight at or before 2 weeks needs careful assessment for:
    • feeding problems
    • unrecognised illness
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12
Q

Plotting on the pre-term section

A
  • for infants born 32-36 weeks gestation
  • up till EDD (term) plus 2 weeks
  • for infants <32 weeks or any nenonate needing close monitoring use new low birth weight chart
  • after EDD plus two weeks move over to 0-1 chart with gestational correction
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13
Q

What is gestational correction

A
  • adjust the plot of a measurement to account for number of weeks a baby was born early
  • number of weeks early = 40 weeks minus gestational afe
  • should not be used for term infants 37 weeks
    • should be continued for 2 years
    • 1 year for infants born 32-36 weeks
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14
Q

Plotting with gestational correction

A
  • plot emasurement at actual afe
  • draw a line back the number of weeks the baby was early and mark this with an arrow
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15
Q

Causes of a heavy child

A
  1. over feeding
  2. diabetic mother
  3. endocrine
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16
Q

Causes of falling weight

A
  • neglect
  • under-feeding
  • chromosomal abnormality
17
Q

Causing of a falling height

A
  • severe malnutrition, constiutional delay, familial
18
Q

How to calculate mean parental height

-Boys and girls

A

Boys

  • plot father height directly onto growth chart
  • plot mothers height directly onto growth chart +12.5 cm
  • calculate the mid parental height

Girls

  • plot mother height onto growth chart
  • plot fathers height subtractng the correction factor of 12.5cm
  • calculate the mid parental height

target range = mid-parental height +8.5cm

19
Q

Causes of short stature

A
  • below the 2nd centile
  • normal - genetic short stature, constitutional delay in growth or adolsecence
  • intrauterine growth retardation
  • dysmorphic syndromes
  • skeletal dysplasia e.g. achondroplasia
  • chronic systemic diseases
20
Q

Growth failure

A

failure to maintina an appropriate heigh velocity for age and maturity, in the absence of other clinical features growth failure indicates frowth hormone deficiency

21
Q

Sexual Preococity

A

Early sexual development irresepctive of cause: precocious puberty is true puberty beginning <8 years in girls and <9 years in boys

early or advanced puberty is true puberty beginning aged 8-10 in girls and 9-11 in boys

22
Q

delayed puberty

A

Standard definiting is B1 >13 in girls and G1 >14 years in boys