development Flashcards
When does birthweight double?
5 months
What is the average height of a newborn?
50 cm
When does birth length double? When does it triple?
Age 4
Age 13
What happens to birth length by age 1?
Goes up by 50%
What is the average head circumference of a full term newborn?
35 cm
What is the normal growth of head circumference for the first 12 months ?
1 cm per month until 6 months old
1/2 cm per month until 12 months old
What is macrocephaly?
Head at 98th% - considered normal
What is hydrocephaly?
Large head since birth with signs of neurological problem
What is the definition of microcephaly?
> 3 standard deviations below the mean
What are 4 major organic causes of failure to thrive?
Chronic renal failure
Metabolic disorder
Inadequate absorption
Inadequate utilization
What is the appropriate growth per year in children over age 1?
5cm/year
What are the 3 most common causes of intellectual disability?
Fetal alcohol syndrome
Fragile x syndrome
Down syndrome
What are the IQ scores in patients with severe intellectual disability?
<34
What are the IQ scores for mild and moderate intellectual disability?
Mild 50-69
Moderate 35-49
What is the condition in which a child has normal development until age 1 and then regresses?
Rett syndrome
Up until what age is it normal for a child to have difficulty pronouncing certain consonants?
Age 6
What should you do for an 18 month old with language delay?
Hearing test then referral to speech
Up until what age is letter reversal normal?
Age 7
When should a child know how to read simple words?
End of first grade
What two types of medications can alter school performance ?
Anticonvulsants
Antihistamines
What should you consider in a patient with normal IQ but below normal scores on achievement testing?
Specific learning disability