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Session 3 CM- ENT-4
CM- ENT-4- disorders of inner ear
Question | Answer |
---|---|
What is vertigo | illusion that the body or environment is tumbling or spinning |
What are the two types of vertigo | central or peripheral |
What is central vertigo | vertigo caused by disruption of the CNS this will often present with cranial nerve findings |
What is peripheral vertigo | vertigo involving the inner ear vestiublar system. Often accompanies ear related head trauma, hearing loss, tinnitus, barotrauma, labyrinthitis, Benign paroxysmal positional vertigo (BPPV) |
Pt presents with a complaint that the it feels like the room is spinning around them the feeling happened after they got hit in the head by a ball. If this disorder is being caused by displaced otoliths what is the problem | benign paroxysmal positional vertigo |
What is meniere's triad | fluctuating low frequency sensorineural hearing loss, fluctuating tinnitus and episodic vertigo can last days with episodes lasting from 30 minutes to several hours |
If you hear that someone has a low frequency senorineural hearing loss what disorder should come to mind | meniere's disease |
This is causd by a nonspecific viral illness that damages the vestiublar nerve causing severe vertigo, and possible permanent vestibular and hearing impairement. | Labyrinthitis |
If the viral infection that caused vestibular nerve damage doesn’t cause hearing loss it is not called labyrinthitis but what | it is called vestibular neuronitis |
Pt presents with a complaint of hearing loss, tinnitus, vertigo, dysequilibrium, fullness or pressure in the ears and facial numbness/paralysis what condition may they have | Acoustic neuroma |
What is the Gold standard way to dx acoustic neuroma | MRI |
What is the tx for an acoustic neuroma | 1. observe, 2. microsurgical removal, 3. stereotactic radiation therapy |
You suspect pt has peripheral vertigo what on the Hx would help lead you to this conclusion | Hx of draining ear, ear disease, ear surgery, ear pain, hearing loss, acute infection, barotrauma or head trauma with complaint of vertigo |
You suspect pts vertigo is central vertigo what in the Hx would sway you toward this conclusion | Hx of headaches, visual symptoms, sensory or motor deficits, muscle weakness, and incoordination |
If the vertigo is not a vestibular disease what would you expect on the hx | Hx of drug use, cardiac symptoms, hypoglycemia, psychiatric disorders, secondary gain issues, and anxiety |
What is the one question you absolutely have to ask about the vertigo | how long does it last (duration) |
If the vertigo lasts for seconds what is the likely dx | BPPV |
If the vertigo last for minutes what is the likely Dx | TIA |
If the vertigo lasts for hours what is the likely DX | Meniere's |
If the vertigo lasts for days what is the likely Dx | Labyrinthitis |
If the vertigo lasts for inconsistent time it varies how long it lasts what is the likely cause | migraines |
What exam would you perform on physical exam if you suspected BPPV and what results would you expect | perform the Dix-Hallpike maneuver. Nystagmus should be evident after maneuver if BPPV is present |
What PE findings will be unique to labyrinthitis | unilateral weakness on fukuda testing |
If you suspect the vertigo is do to a congenital abnormaility of the ear what test would be better to order MRI or Temporal bone CT | Temporal Bone CT |
What is the tx for BPPVq | epley maneuver or canalith repositioning this is 90% effective if performed correctly |
What is the tx for menire's disease | low sodium diet, diuretics, meclizine or benzos for acute phase of illness. Hearing conservation is imperative, audiogram during acute illness makes the dx |
What is the tx for labyrinthitis | admission, benzos, steroids, antivirals, antiemetics and acute hearing test. Pt should be very sick and may have permanent hearing loss and vertigo |