sandra
Forum Guru
Topics: 201
Posts: 470
|
An unconscious patient was highly suspected of brainstem lesions. The location of the disease is examed by cold water irrigation to the external auditory meatus. The test shows a left eye slow deviation when irrigation to the left ear. Which of the following is correct?
a. Brainstem intact
b. Bilateral MLF lesion
c. Low brainstem lesion
d. Warm water irrigation is needed for further diagnosis.
e. Nystagmus to the oposite side can be observed.
___________________
You become what you think you are!
|
| fox
Forum Guru
Topics: 70
Posts: 727
|
D?
___________________
Aim High
|
| Leopard
Forum Guru
Topics: 30
Posts: 401
|
"A" is the correct answer in my opinion
___________________
FA is just a good revision book.It is not a "real" learning tool.
|
| vallia
Forum Guru
Topics: 98
Posts: 889
|
A is correct and it seems that E is also correct. COWS- Cold water opposite nistagmus, warm water same side nistagmus.
Please give correct answer
___________________
fight possessed
|
| Dr.Papez
Forum Senior
Topics: 0
Posts: 152
|
The interpretation of the test finding- left vestibular apparatus and the connections are intact- This would involve the upper medulla and pons (for lateral eye deviation). Consciousness is mainly seated in the midbrain reticular formation and bothe hemispheres. So option B and C are wrong.
D- Adding warm water is not really going to add anything much.
E- nystagmus is usually observed in conscious patients. If some one is deeply unconscious, you only see eye deviation (which is just opposite of nystagmus direction-i.e., cold-eye deviation to same side, warm to opp side)
A is relatively right- but could be wrong also as it says "brainstem" is intact. We have no idea whether midbrain is intact. Part of brainstem-pons, medulla is intact would be the most appropriate answer.
|
| mediocre
Forum Elite
Topics: 37
Posts: 229
|
thanx dr papez,grt info.
___________________
"Do not worry if you have built your castles in the air. They are where they should be. Now put the foundations under them." - Henry David Thoreau
|
| Dr.Papez
Forum Senior
Topics: 0
Posts: 152
|
you're welcome
|
| muzammil
Forum Guru
Topics: 16
Posts: 664
|
gud explanatin papez
|
| Ig F
Forum Elite
Topics: 3
Posts: 436
|
a and e seemed rite but papez gave a gr8 explanation....
___________________
i m not perfect but i wanna get close to it......
|
|
| |
| | | | | | | | | |
