ear stuff Flashcards
VOR reflex allows for
eyes to maintain focus on a point of interest during head movement
What is the fastest reflex in the body?
VOR
how does VOR work?
- inner ear senses head rotation in any direction
- signal sent to MLF to abducens, trochlear, oculomotor nuclei
- eyes move in precisely opposite direction of head movement
- net effect: eyes remain steady in space
VCR functions to
help maintain stability and upright stance of the head
VCR works by
vestibular systems sense the direction of gravity and initiates motor reflexes in the muscle controlling the head and neck that serve to right the head
VSR functions to
assist balance and provide a framework for coordinated motion of the limb during ambulation
In response the gravity, the VSR provides
continuous muscular tone that acts as a priming framework for muscle action
VSR: righting reflex
when the upright human is pushed to one side, the limbs on half the body tend to extend, whole those on the opposite side tend to flex
serves to rebalance the body
acute otitis media (AOM) signs
- pain
- sensation of fullness in ear
- inflammation of TM
- middle ear effusion
if AOM and erythema, edema and otorrhea
perforation
AOM treatment
- watchful waiting in low risk pt
- systemic antibiotics–amoxicillin
- tympanocentesis for culture or acute pain control
- myringotomy/mastoid surgery in complicated cases
fluid in the middle ear can take___ to drain
up to 3 months
otitis media with effusion signs
- recurrent episodes of AOM
- pain, fullness, popping
- irritability and sleep disturbances
- imbalance, delayed gross motor development
- delayed speech and language development (hearing loss)
otitis media with effusion treatment
- pressure equalizer tube insertion
- adenoidectomy is associated nasal obstruction or sleep apnea
- antibiotics, histamine and steroids DO NOT WORK
tympanic membrane perforation
- more common in adults
- erupt, drain, can become infected
- keratin ball with lives cells
- grows and causes local damage
