12/31/2013

12/31/2013

Answers:

What percentage of traumatic TM perforations heal within 30 days?
A) 20% 
B) 50% 
C) 70% 
D) 90% 
E) 100%

~70% of traumatic TM perfs heal on their own in one month. ~95% will heal within 3 months. If a TM perf is still not healed on its own after this time consider performing a paper-patch myringoplasty.

After what length of time dose persistence of a posttraumatic CSF leak significantly raise the chance of developing meningitis?

80% of CSF leaks will close on their own within a week and the risk of meningitis is low, however, CSF leaks that persist longer than 7-10 days the risk of developing meningitis increases dramatically to >20%.

MC Questions:
What is the most common type of CPA tumor?
A) Epidermoid 
B) Glomus 
C) Meningioma 
D) Astrocytoma 
E) Schwannoma

Free Response Question:
Describe the boundaries of the CPA.

Quick Facts:
Clinical
Findings Of Vestibular Schwannoma -Hearing
loss present in 95% of patients.-Mostly
slowly progressive hearing loss w/ noise distortion.-20%
have episodes of sudden hearing loss.-Level
of hearing loss does not predict tumor size.
-Tinnitus
present in 65% of patient, often constant high pitch buzzing.-Pts
often adapt to disequilibrium well because it occurs so slowly but it is present
in 60% of patients.
-Facial/Trigeminal
nerve dysfunction-most
common to see V2 numbness/absent corneal reflex.-can
also see numbness of posterior EAC (Hitselberger sign-Facial
weakness only present in 17%
-Other
complaints include visual complaints, diplopia, headache, AMS, n/v and increased
ICP w/ papilledema however these occur only during rapid expansion.