Download deafness

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
page
5
page
6
page
7
page
8
page
9
page
10
page
11
page
12
page
13
page
14
page
15
page
16
page
17
page
18
page
19
page
20
page
21
page
22
page
23
page
24
page
25
page
26
page
27
page
28
page
29
page
30
page
31
page
32
page
33
page
34
page
35
page
36
page
37
page
38
page
39
page
40
Document related concepts
no text concepts found
Transcript 
Deafness
Dr. Abdulrahman Alsanosi
Assistant professor
King Saud University
Otolaryngology consultant
Otologist , Neurotologist &Skull Base Surgeon
King Abdulaziz University Hospital
Director of cochlear implant program at KFMC
Definitions
 Impairment of sound perception
more than 20 (15) decibel on pure
tone audiogram.
Hearing loss
Types:
Conductive hearing loss
1. Concha
2. Ear Canal
3. Drum
4. Ossicular Chain
5. Eustachian Tube
Conductive hearing loss
 Exteranal canal pathology :
 Artesia
 Inflammatory
 Acute otitis externa
External canal pathology
 Wax
External canal pathology
 Foreign body
External canal pathology
Tumors:
 Osteoma
 exostosis
Conductive hearing loss
 Tympanic membrane:
 Absent
Perforated
 Too thick
tympansclerosis
 Too thin
SOM
Conductive hearing loss
Ossicular chains
 Absent &erosion
 Fixation (otosclerosis
 Disrupted
trauma
Conductive hearing loss
EustachianTube dysfunction:
 Retraction
 Effusion
Sensorineural hearing loss
Two types :
 Sensory (the pathology is within hair cells in cochlea)
 Neural (the pathology is
connection
with in the auditory nerve and it’s
Etiologies
Congenital :
 Mondeni deformity
Sensorineural hearing loss
Acquired :
 Inflammatory
-labyrinthitis ,meningitis
-
Noise exposure
AUDIOLOGICAL CONSULTATION
LEFT EA R (AS)
500
1000
2000
4000
8000
0
10
0
A
A
A
A
20
10
250
500
1000
A
A
A
2000
8000
A
30
40
A
40
A
50
4000
20
A
30
60
70
70
80
80
90
90
100
100
110
110
A/C
A/C
B/C
B/C
.5 kHz
1 kHz
TEO AE
Present
P
P
Absent
DPOAE
P
P
P
A
A
50
60
E FFECTIV
E
MAS KI NG
HEARING LEVEL IN dB (ANSI, 1996)
250
RIGH T EA R (AD )
2 kHz 3 kHz 4 kHz 6 kHz
.5 kHz
1 kHz
2 kHz 3 kHz4 kHz 6 kHz
TEOAE
P
P
P
A
DP OAE
P
P
P
A
 Autoimmune
-Cogan syndrome
 Ototoxic drugs
-Aminoglycosides groups ,diruiti,….
Trauma
 Temporal bone fracture
1.Longitudinal fracture
2.Transeverse fracture
Examination
 Complete
head
and neck exam
 Otoscopic / microscopic
ear exam of both ears
Clinical testing of hearing

Tuning forks

Audiogram battery:
Pure tone audiogram
Speech audiogram

Impedance
1.
Acoustic reflex
2. Tympanogram
3.
Volume
4.
Acoustic reflex decay
pure tone audiogram
Normal hearing
Conductive hearing loss
pure tone audiogram
 Sensorineural hearing loss
Pure tone audiogram
 Mixed hearing loss
Tympanogram
Degree of hearing
impairment
Managemnt of deafness
 Medical management
 Hearing aids
Management of deafness
 Surgery
A.Myringotomy and ventilation tube
Otitis media with effusion
Management of deafness
 Surgery
B. Myringplasty &tympanoplasty in
case of CSOM
Management of deafness
C.Ossiculoplassty
Management of deafness
 BAHA (Bone anchored hearing aid)
-Atersia of external canal
-Chronic drainage ear not responding to surgery
Management of SNHL
Surgery :
D. Cochlear implant
- prelingual children and postlingual
adult
-it pass by the external ,middle and
inner ear to stimulate auditory
nerve directly
D. Cochlear implant
Thank you
Related documents