Test 1 Flashcards
How to measure head circumference
Measure around the head at the point of greatest circumference from the occipital protuberance above the base of the skull to the mid forehead or point of greatest bossing of the frontal bone
Abnormal head circumference
a head circumference that plots 1-2 standard deviations above height and weight
OR
>95th or <5th percentile for age
Microcephaly
indicative of small-for-gestational infant, intrauterine growth retardation, or premature closure of the cranial sutures (termed craniosynostosis) requiring immediate referral
Macrocephaly
a large head in proportion to body size may indicate increased intracranial pressure or familial variant
For how long do you measure head circumference
Generally until age 3
How to measure chest circumference
At the nipple line
Head verses chest circumference
Head circumference is normal 2cm greater than chest circumference in the first 6 months of life.
By 1 years old, chest circumference and head circumference should be equal
By 2 years old, chest circumference becomes larger than head circumference
Height
The most stable measurement of growth and maturation in childhood.
Linear growth is genetically predetermined and occurs in spurts
How to measure infant or toddler height
recumbent height is measured with infants head firm against top of measuring device and knees extended against the table and feet against bottom of footboard measuring device
Term newborn height
45 to 55 cm (18-22in) at birth and increases by 2.54cm or 1 inch per month over the first few months of life
Term infants height
increases by 50% in the first year and is primarily truncal growth
By 2 years old, doubling the height can give an estimate of adult height
Measuring height after 2 years old
Standing height is preferred with a stadiometer with back/butt/heels back against wall and feet flat without shoes
Changes in height after 2 years old
2-3 age = 7.5cm (3 inches)
3-onset of puberty = 3-7cm/year (2-3 inches)
adolescent girls height realized by 16 years and boys height by 18 years
linear growth deficiency or short statue may be an indicator of what
cardiac or renal disease, fetal alcohol syndrome, methadone exposure, metabolic abnormalities, growth hormone deficiency, or chromosomal abnormalities
When should arm span be measured?
When adolescent male and females of tall stature had disproportionate arm length. Arms span should equal height. If arms exceed height, evaluate for Marfan Syndrome
What is average birth weight in term infant
3175 - 3400g or 7-7.5lbs
How much weight to infants lose in first week of life?
up to 10% and should regain it by end of second week
What is poor weight gain in early infancy indicative of?
failure to thrive. It may be caused by poor feeding patterns, malnutrition, neglect, cardiac or renal disease, chronic infection, or chromosomal and congenital abnormalities
How do you weigh infant - 1 year
Undressed and consistently in no diaper or dry diaper in an infant balance scale.
Safety is most important and child is never left alone
How to weigh 1-2 year old
infant scale or standing scale if cooperative
BMI < 5th percentile
Underweight
BMI 85th - 94th percentile
Overweight