Nerves & Senses Flashcards
aka: periorbital ecchymosis
raccoon eyes
aka: retinopathy of prematurity
retrolental fibroplasia
abnormal growth of blood vessels in retinas of premature infants
retinopathy of prematurity (ROP)
describe the group of preemies that get routinely screened for retinopathy of prematurity
< 1500g or gestational age of < 30 weeks when infant is 4-6 weeks old
cause of retinopathy of prematurity
preemie, low birth weight, high supplemental oxygen concentration, drugs, artificial lighting, seizures, mechanical ventilation, anemia, blood transfusions, spells of apnea & bradycardia
how is retinopathy of prematurity diagnosed
indirect ophthalmoscope and scleral depression
complications of retinopathy of prematurity
blindness, crossed/wandering eyes, lazy eye, nearsightedness, glaucoma, late onset retinal detachment
what is the most common crippling condition in children
cerebral palsy
can retinopathy of prematurity be prevented
no
congenital or acquired damage to CNS
cerebral palsy
how many types of cerebral palsy are there
3
list the 3 types of cerebral palsy
spastic, athetoid, ataxic
cause of cerebral palsy
poor blood/oxygen supply during development/birth/early childhood
cerebral palsy is more common in
men
how is cerebral palsy diagnosed
clinical picture and neurologic exam
group of malformations of spine where posterior part of bony canal completely/partially absent
spina bifida
aka: spina bifida
neural tube defects
list the 3 different types of spina bifida
- spina bifida occulta
- meningocele
- myelomeningocele
this version of spina bifida only involves the vertebrae
spina bifida occulta
cause of spina bifida
- exposure to radiation
- reduced levels of vitamin A and folic acid
how is spina bifida diagnosed
maternal blood levels of AFP, prenatal ultrasound, physical exam, neurologic sx, spinal ultrasound
meninges protrude through opening of spine forming sac filled w/CSF
meningocele
tx meningocele and myelomeningocele
surgery
condition where spinal cord & meninges protrude thru spinal cord
myelomeningocele
aka: myelomeningocele
spinal bifida cystica
increase in CSF/CSF circulation blocked creating head enlargement/increase in cranial pressure
hydrocephalus
the cause of hydrocephalus is unknown, however what are some potential theories
lesion in CSF system, congenital structural defect, intracranial hemorrhage
how is hydrocephalus diagnosed
clinical picture, physical exam, xray skull studies, CT, MRI
tx: hydrocephalus
shunt and catheters
most severe neuro defect where fetus has no cranial vault and little cerebral tissue
aencephaly
how is anencephaly diagnosed
prenatal ultrasound and elevated AFP levels in blood test
cause of anencephaly
failure of neural tube to close during 2nd-3rd week of gestation
anencephaly is ___ and affects ____ more than ____
familial; affects females more than males
combination of brain disease and fatty invasion of inner organs
reye syndrome
the cause of reye syndrome is unknown, but its occurrence is linked to
using aspirin during viral infection (specifically flu or chicken pox)
how is reye syndrome diagnosed
- elevated serum ammonia levels
- elevated enzyme level on liver function test
- liver biopsy
- CSF analysis
cancer of sympathetic nervous system
neuroblastoma
what ist he third most common childhood malignancy
neuroblastoma
how is neuroblastoma diagnosed
- measure urine & serum catecholamine levels
- electrolyte & kidney function
- biopsy of mass
- bone marrow aspiration & biopsy
- radionuclide bone scan
- abdominal CT
- chest xray
tx: nueroblastoma
surgery, chemotherapy, autologous hematopoietic stem cell rescue
aka: hyperopia
farsightedness
cause of hyperopia
abnormally short eyeball
light focuses beyond retina causing unable to see close up
hyperopia
light focuses in front of retina so cannot see far away
myopia
cause of myopia
abnormally long eyeball
aka: myopia
nearsightedness
condition where cornea is not spherical
astigmatism
lens cannot focus on near objects bc of lack of elasticity from age
presbyopia
when does presbyopia generally start
mid 40s
tx: refractive errors
- glasses
- contacts
- corrective surgery (radial keratotomy, laser, LASIK, PRK, AK, LTK, CK, Intraocular contact lens)
condition with involuntary repetitive rhythmic movements of one or both eyes
nystagmus
cause of nystagmus
congenital, brain or inner ear lesions, alcohol, drug abuse, brian tumors, cerebrovascular lesions, abnormal development of nervous system
what is the most common form of nystagmus
congenital
congenital nystagmus commonly manifests
before 6 months-1yr
tx: nystagmus
- treat underlying cause
- Kestenbaum procedure
condition where eyes fail to look in same direction @ same time
strabismus
cause of strabismus
- weakness in nerves stimulating eye muscles
- diabetes mellitus
- muscular dystrophy
- hypertension
- trauma
- aneurysm
- intracranial lesion
- temporal arteritis
tx: strabismus
glasses, surgery, ambylopia tx
aka: hordeolum
stye
condition of acute painful abscesses of eyelash follicle/sebaceous gland
hordeolum
cause of hordeolum
staphylococcal infection, blepharitis
tx: hordeolum
warm compress, topical or oral antibiotics, surgical drainage
condition with small firm nonmobile painless subcutaneous nodule with occlusion of meibomian gland
chalazion
cause of chalazia
blockage of fluid from meibomian gland
tx: chalazia
let run its course, warm compress, topical antibiotics, corticosteroid injection, surgical removal
any inflammation or infection to kornea
keratitis
cause of keratitis
- herpes simplex
- bacteria
- fungi
- wearing contacts
- cornea trauma
- exposure to dry air or intense light
tx: keratitis
- broadspectrum antibiotic or antiviral
- ophthalmic moisturizing ointments and drops
- eye patch
inflammation of margins of eyelids involving hair follicles and glands
blepharitis
cause of blepharitis
- staphylococcus infection
- allergies
- exposure to smoke/dust/chemicals
- seborrhea
tx: blepharitis
- warm compress
- clean eyelids w/baby shampoo
- antibiotic ophthalmic ointments
condition where eyelids turn inwards
entropion
cause of entropion
aging (soft tissue loses elasticity)
tx: entropion
surgery