Term
Set of symptoms-syndrome; Set of symptoms related to an abnormal loop in the blood supply (a vein or artery) which compresses or affects the nerves in the vicinity.
-Abnormal shape of the loop which compresses it |
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Definition
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Term
| What does AICA stand for? |
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Definition
| Anterior Infererior Cerebellar Artery |
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Term
Vascular Loop Syndrome:
-What nerves can it compress?
-very obvious when it affects the 5th nerve-report nerve ___ and pain on ___ ___ of the face-can have a ___ change in hearing |
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Definition
| trigeminal (5th) nerve, facial nerve, and the 8th nerve; spasms; one side; gradual |
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Term
Vascular Loop Syndrome:
-Normally diagnosis this when the ___ nerve comes into play
-__ in 2000 people have the trigeminal nerve involved |
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Definition
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Term
-A lot of people have vascular loops but are ___
-Prevalence of this disorder is hard to know-possibly __% of the population has one of the nerves in contact with the AICA |
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Definition
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Term
| What is going on in this picture? [image] |
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Definition
| Loop of AICA encircles the VIII nerve causing an impression of the nerve and reduction of its diameter |
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Term
Symptoms of Vascular Loop Syndrome:
-What kind of hearing loss?
-Tinnitus or no tinnitus?
-Speech perception?
-vestibular symptoms if ___ nerve is involved
-Trigeminal-___ pain and ___ spasms
-7th nerve-facial ___, abnormal ___, ___ on one side of the face (similar to bells palsy) |
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Definition
| SNHL; yes; poor; 8th; facial; hemifacial-one side of the face; droop; tearing; weakness |
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Term
Audiologic implications:
-Hearing loss is ___
-auditory brainstem response is ___
-7th or 8th nerve-acoustic reflexes would be ___ |
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Definition
| variable; abnormal; abnormal |
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Term
[image]
Subarcuate artery crosses the VIII nerve, causing an ___ of the nerve |
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Definition
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Term
Treatment for Vascular Loop Syndrome:
-surgery (vascular decompression surgery)-___ the AICA-want to ___ the nerve; sometimes treated without surgery-given medication (___ drugs) which helps with the ___
-Symptoms usually ___ after surgery |
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Definition
| redirect; preserve; anticonvulsant; symptoms; resolve |
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Term
| Mass that takes up space that compresses vascular structures |
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Definition
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Term
| Mass lesions of the CAN are not very ___ and can cause ___ deficits |
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Definition
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Term
Mass lesions of the CANS:
-Symptoms are all over the map-we care about the ___ symptoms and possibly ___. What other symptoms can be reported?
-Auditory ___ and distortion of ___
-The larger the lesion the more ___ and ___ the symptoms may be
-Hearing loss may be the ___ of the concerns of the patient |
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Definition
| hearing; tinnitus; Can report headaches, nausea, vomitting, seizures, altered mental state; halucinations; music; severe; broader; least |
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Term
Mass lesions of the CANS:
-__ out of 1000 people experience some kind of benign brain lesion-more common in ___ (attributed to the careers)
-__ out of 1000 experience a malignant brain lesion
-The ___ you are the more likely you are to get one
-Most concerned with the ones that invade the ___ ___ ___
-Classified as extra ___ growths. Ex: ___ |
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Definition
| 8; males; 6; older; internal auditory canal; axial; Meningioma |
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Term
Primary Brain Tumors:
-___ ___-blood intended for neural structures can be cut off or redirected by the tumor which can cause damage to the connecting structure
-Impairment of nerve conduction by direct ___; physical compression of nervous structures can deteriorate ___; swelling or invasion of ventricular spaces can cause ___ to build up-can cause leakage of that fluid into ___ structures |
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Definition
| Vascular steal; compression; myelin; fluid; surrounding |
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Term
Primary Brain Tumors:
-Our job is to ___ hearing and ___ patients when needed
-Treatment: ___, ___ surgery, ___ (all medical in nature); treatment depends on the ___ of the tumor/lesion so it varies. |
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Definition
| monitor; refer; surgery; radiation; chemotherapy; nature |
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Term
| What are some signs and symptoms of primary brain tumors? |
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Definition
| headache (56%), memory loss (35%), cognitive changes (34%), motor deficits (33%), and many more |
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Term
| Anything space occupying-they are bleeds or interruptions of blood supply; abnormalities of blood supply |
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Definition
| Vascular Lesions of the CANS |
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Term
Vascular Lesions of the CANS:
2 categories: ___ (lack of blood flow to an area of brain tissue- due to blocked artery or abnormal tissue growth clotting, or infection. Ex: vasculitis, tumor, clot, vessel spasm) and ___ (an escape of blood from a ruptured blood vessel, especially when profuse) |
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Definition
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Term
Hemorrhagic Vascular Lesion of the CANS:
Hemorrhagic-___. Hemo means ___ and rhea means ___. Blood isn't ___ where it's supposed to be and blood could ___ where it isn't supposed to be; related to high ___ ___ which leads to ___ (ballooning of blood vessel in a weak spot). When aneurysm ___ then the hemorrhage happens. |
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Definition
| rupture; blood; flow; flowing; accumulate; blood pressure; aneurysm; breaks |
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Term
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Definition
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Vascular Lesions of the CANS:
-increases with ___
-incidence __/100,000 if you are 35 and ___/100,000 after this age
- ___ are more prone
-With the elderly population there isn't a ___ difference
-can include ___ ___, ___, ___
-higher lesions: auditory ___, trouble listening in ___, ___, following directions |
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Definition
| age; 1; 840; men; gender; hearing loss; tinnitus; vertigo; hallucinations; noise; localizing |
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Term
-There are many different presentation of vascular lesions of the CANS
-Can present with ___ HL, ___ can be normal or abnormal, ___ ___ isn't severely affected, ___ might not be normal on the affected side, varying degrees of ___ ___, HL can ___ after treatment |
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Definition
| SNHL; ABR; speech perception; reflex; HL; improve |
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Term
| Audiologic Testing in cases of Mass or Vascular Lesion to CANS can include what? |
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Definition
| Dichotic tests, temporal processing tests, Monaural low redundancy speech tests, Binaural interaction tests, and Electrophysiology |
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Term
| Same stimuli in both ears |
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Definition
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Term
| refers to ability to resolve info that is different between the 2 ears |
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Definition
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Term
| people who do poorly on dichotic tests have ___ lesions or ___ lesions |
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Definition
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Term
| dichotic digits-2 different digits at the same time-___ hemisphere deficit have trouble with this |
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Definition
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Term
| With dichotic tests what do you need to figure? |
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Definition
| if this is a left side problem, right side problem, or the communication between the 2 |
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