HD physiology part 2 Flashcards
How should you weigh babies
- babies should be weighted without any clothes or nappy
How should you weigh children
- children older than two years can be weighed in a vest and pants but no shoes, footwear and dolls or teddies in hand
- use a class III clinical electronic scales in metric setting
when do you weigh when close monitoring is required
- once a month before 6 months
- once per two months aged 6-12 months
- once per 3 months over the age of 1 year
when do you weigh normally
- they are normally weighed only at the time or routine immunisations
- 8, 12 and 16 weeks and at age one year
what is the normal rate of weight gain
- weigh usually tract within one centile
what happens when there is acute illness
- weight loss and weight central fall
- a Childs weight usually returns to its normal centile within 2-3 weeks
how do you measure head circumference
- it should be measured using a narrow plastic or disposable paper tape
- should be taken where the head circumference is the widest
when do you measure length
- measure length before the age of 2 years if concerned
- use a length border - requires two measurers
- should be measured without a nappy or footwear
what does length vary to
- measured length will vary in the same child depending on mood of the child and the style of the measurer
what is the normal growth rate
- head circumference usually tracks within one centile space
- fewer than 1% of infants drop or rise through greater than 2 centile spaces after the first few weeks
how do you do adult height prediction
- plot the most recent height
- find the central on the adult scale
- 4 out of 5 children will be within 6cm of this value when an adult
How do you plot BMI
- read of the weight and height centiles from the growth chart
- plot the weight centile against the height centile bottom axis
what is an average BMI
- a child whose weight is average for their height will have a BMI between the 25th and 75th centiles
What does a BMI centiles show your overweight
- BMI above the 91st centile suggests that the child is overweight
- BMI above the 98th centile suggests that the child is very overweight - clinically obese
what BMI centile represents under nutrition
a BMI below the 2nd centile is unusual and may reflect under-nutrition