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APHASIA : EXPLAINED + MCQ
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If one can not comprehend or produce spoken or wrien language
inspite of having normalvision/hearing/ motor function then he/she
is said to be aphasic.
CONCEPT OF CEREBRAL DOMINANCE : it says that aphasia is due to
aection of dominant /categorical hemisphere.
(hp://www.gophoto.it/view.php?i=hp://pguploads.les.wordpress.com/2013/04/aph-1.jpg)
FIGURE 1; IT WILL EXPLAIN HOW SPEECH IS PRODUCED???
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(hp://www.gophoto.it/view.php?i=hp://pguploads.les.wordpress.com/2013/04/aphasia-1.jpg)
Generally we divide aphasia into uent , non uent and anomic
aphasia. there are other types also ascondoction aphasia.
FIRST WE TAKE UP ANOMIC APHASIA: Note that in damage to angular
gyrus only naming isaected as there is problem in understanding
wrien language or picture especially NAMING ,otherwise
comprehension of wrien or spoken language is intact. SEE FIGURE
BELOW
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(hp://www.gophoto.it/view.php?i=hp://pguploads.les.wordpress.com/2013/04/aphasia-1-copy.jpg)
NOW SEE DAIGRAM OF WERNICKES APHASIA
(hp://www.gophoto.it/view.php?i=hp://pguploads.les.wordpress.com/2013/04/aphasia-1-copy-2.jpg)
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Q1. ALL ARE TRUE ABOUT WERNICKES APHASIA EXCEPT..
A] SPEECH IS FLUENT AND GRAMMATICALY CORRECT
B]SPEECH IS INCOMPREHENSIBLE DUE TO NEOLOGISM
C] READING AND WRITING IS ALSO IMPAIRED
D] LESION IS SEEN IN POSTERIOR PERISYLVIAN REGION
E] MOST COMMON CAUSE IS EMBOLISM IN DOMINANT SUPERIOR DIVISION
OF MIDDLECEREBRAL ARTERY.
ANS : E] most common cause of wernickes aphasia is embolism in
INFERIOR DIVISION OF MCAwhich supplies are no 22 present in
posterior perisylvian region.
NOW SEE THE FIGURE BELOW TO UNDERSTAND BROCAS APHASIA:
(hp://www.gophoto.it/view.php?i=hp://pguploads.les.wordpress.com/2013/04/aphasia-1-copy-3.jpg)
Q2] ALL ARE TRUE ABOUT BROCAS APHASIA EXCEPT
A]SPEECH IS NON FLUENT AND INTERUPTED BY MANY WORD FINDING
PAUSES
B]NAMING & REPETATION IS IMPAIRED
C]NO IMPAIREMENT IN WRITING
D]COMPREHENSION OF WRITTEN AND SPOKEN LANGUAGE IS INTACT
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E]PATIENT IS UNAWARE OF THE DEFICIT
F] LESION INVOLVES INFERIOR FRONTAL GYRUS SUPPLIED BY SUPERIOR
DIVISION OFMCA
ANS [C] & [E]
AS most of the patient show severe writing impairement{ check
out comments below this topic to knowwhy writing is impaired} &
patient is aware of his decit .
CONDUCTION APHASIA: Speech output is uent but paraphasic ie cant
put parts of word together. Repeatation , naming , writing is
impaired but comprehension of spoken language is intact. Earlierit
was thought to be due to lesion in arcuate fasciculus but now it is
considerd to be due to lesion inauditory cortex ( area
40,41,42).
NOTE [1] PURE WORD DEAFNESS= IMPAIREMENT OF COMPREHENSION FOR
SPOKENLANGUAGE ONLY.
[2] PURE ALEXIA =COMPREHENSION IS IMPAIRED ONLY FOR WRITTEN
LANGUAGE
REFERENCE 1. GANONG PG 297, 23RD ED [2] HARRISONS MANUAL OF
MEDICINE 18ED PAGE335
Posted by Dr Sujeet Kumar on April 12, 2013 in NEUROLOGY.
3 Comments
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3 Responses
drkushal447 says:April 12, 2013 at 7:25 am (Edit)i have a
question.Why is writing impaired in lesion of brocas area?
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ReplyDr Sujeet Kumar says:April 12, 2013 at 10:15 am
(Edit)WRITING IS IMPAIRED IN MOST CASES[ Hson manual of medicine
18ed page 336]. Writing isassessed for spelling errors , word order
, grammer[ hson 17ed pg 163].Brocas area is concernedwith
maintaining word order and grammer of language ie spoken and wrien.
comprehension ispreserved in brocas aphasia except for grammer part
so brocas aphasia is not purely expressiveaphasia as it has
agrammatism [hson pg 164 17ed]While none of the books i reered for
this topic mentions it clearly , why writing is impaired ?,but
above lines makes us to draw inference that due to improper word
order and grammaticalerrors writing is impaired.HOPE U GOT UR
ANSWER.
Replydrkushal447 says:April 13, 2013 at 2:45 pm (Edit)thanks
will denitely read up the source you quoted but your reasoning
seems to be bangon thanks!
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