-
endogenous
hearing loss is within the zygote
-
exogenous
- pregnant lady who gets injured or gets a virus
- coming from the outside
- not present in conception
-
most common syndrome
- down syndrome
- chromosome problem
-
-
-
perinatal
- the period around birth
- 28 weeks gestation to 7 days old
-
types of hereditary hearing loss 3
- autosomal dominant
- autosomal recessive
- sex-linked
-
recessive disorders tend to be...
- worse than dominant disorders
- and they never flush out of the gene pool
-
what do/have we used to test infant hearing
- previously used a list of risk factors
- now we use neonato screening
-
prenatal infections ((S)TORCH Complex)
- syphilis
- toxoplasmosis
- other (AIDS)
- rubella
- cytomegalovirus (CMV)
- Herpes simplex
-
what are the 2 bacteris infections of STORCH
- syphilis - STI delayed onset to teen years
- Toxoplasmosis - caused by eating raw meat and cat poop
-
what are the 4 viral infections of STORCH
- other (AIDS) - 70 million ppl infected
- Rubella - German measles, effects fetus during first trimester, 1964 last big epedemic
- Cytomegalovirus (CMV) - by age 50, 99% of ppl are infected, only effects the fetus badly, like the flu
- Herpes simplex - 1/4 of ppl, this one effects the ear unlike the STI
-
the placenta acts as a ___, but cannot ___
- filter
- filter viruses because they are too small
-
postnatal infections 4
- Bacterial Meningitis
- Mumps
- measles
- herpes zoster oticus
-
bacterial meningitis
- very contagious
- inflammation of the meninges around beain caused by bacteria
-
mumps
- used to be a childhood disease
- now very rare
- causes unilateral hearing loss
- virus
- in adult males is can be catistrafic
-
measles
- virus
- Rubeolla
- outbreaks used to occur frequently after spring break
-
herpes zoster oticus
- herpes of the ear
- not the STI, but acts like it
- appears to be acne only around the ear
- AuD MUST wear gloves
-
PDE Prenatal Drug Exposure Infants
- fetal alcohol syndrome
- crack
- heroine
- cigarette smoke
- marijauna
-
fetal alcohol syndrome
- if you have one kid with this, you will usually have 2-3
- very common
- barrell shaped body with toothpick arms and legs
- cleft palate is common in this population
-
crack baby
- not very good data
- worst because the baby will not bond with mother and is very fussy
- they have gaze aversion
- many become victims of child abuse
-
Heroin baby
- baby addicted at birth and must go through withdrawl
- no long term effects known
-
effects of cigarette smoke
decrease in birth rate of these children even if it is second hand smoke
-
marijuana baby
causes the child to be oxygen deprived
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