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12/3/2010
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OTOACOUSTIC EMISSIONSOTOACOUSTIC EMISSIONS
YUSA HERWANTOYUSA HERWANTODepartemen THTDepartemen THT--KL FK USU KL FK USU
Rs. Adam Malik Medan Rs. Adam Malik Medan
�� Otoacoustic emission ditemukan Kemp (1978)Otoacoustic emission ditemukan Kemp (1978)
�� Definition: acoustic energy produced by the Definition: acoustic energy produced by the
cochleacochlea
�� Standard set up: stimulus generator, signal Standard set up: stimulus generator, signal
receiverreceiver
�� Outer hair cell electroOuter hair cell electro--motility. motility.
SEJARAH & FUNGSI OAE SEJARAH & FUNGSI OAE
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Cara kerja DPOAECara kerja DPOAE
Response from click stimulation
Fast component 9.4msec
Slow component
13.6msec
Feed back of Outer hair cells
Speaker
Microphone
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�� Differential diagnosis: as a part of Differential diagnosis: as a part of
audiologic batteryaudiologic battery
�� Serial monitoring: developing conditions Serial monitoring: developing conditions
and treatment efficacyand treatment efficacy
�� Screening: newborn, occupational, school, Screening: newborn, occupational, school,
elderlyelderly
Clinical Applications of OAEClinical Applications of OAE
�� NoiseNoise--induced hearing lossinduced hearing loss
�� OtotoxicityOtotoxicity
�� Hereditary hearing lossHereditary hearing loss
�� Prediction of Hearing loss: Onset of noise, Prediction of Hearing loss: Onset of noise,
drug, aging damagedrug, aging damage
�� Provide reasonable estimate for clinical Provide reasonable estimate for clinical
hearinghearing
Clinical Application of OAEClinical Application of OAE
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11. SKRINING PENDENGARAN . SKRINING PENDENGARAN
PADA BAYI,ANAK SEKOLAH,PEKERJA PADA BAYI,ANAK SEKOLAH,PEKERJA
INDUSTRIINDUSTRI
2. PEMERIKSAAN AUDIOLOGI ANAK2. PEMERIKSAAN AUDIOLOGI ANAK
3. MONITORING : OTOTOKSIK,MENIERE,NEUROMA 3. MONITORING : OTOTOKSIK,MENIERE,NEUROMA
AKUSTIKAKUSTIK
4. KELAINAN RETROKOKLEA4. KELAINAN RETROKOKLEA
5. DIAGNOSTIK :BISING,PRESBIKUSIS,IDIOPATHIC 5. DIAGNOSTIK :BISING,PRESBIKUSIS,IDIOPATHIC
HL, FAMILIAL HLHL, FAMILIAL HL
�� Meniere’s disease: Meniere’s disease:
a) hyperosmic challenge ( urea, glycerol )a) hyperosmic challenge ( urea, glycerol )
b) ability to detect fluctuationb) ability to detect fluctuation
�� Sudden hearing loss: two emission patternsSudden hearing loss: two emission patterns
�� Acoustic neurinoma: Acoustic neurinoma:
a) retrocochlear/ noncochlear subtypea) retrocochlear/ noncochlear subtype
b) cochlear subtypeb) cochlear subtype
c) mixed pattern, low vs high frequenciesc) mixed pattern, low vs high frequencies
�� Screening of newborn hearing: prediction of future Screening of newborn hearing: prediction of future
hearing statushearing status
Evoked OAE and AudiogramEvoked OAE and Audiogram
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HAL YANG HARUS DIPERHATIKANHAL YANG HARUS DIPERHATIKAN
�� OTOSKOPIOTOSKOPI
�� KEADAAN TELINGA TENGAHKEADAAN TELINGA TENGAH
�� PEMASANGAN PROBEPEMASANGAN PROBE
�� RUANGAN HARUS SEPIRUANGAN HARUS SEPI
�� INTERNAL NOISEINTERNAL NOISE
Hasil OAE SKRINING :Hasil OAE SKRINING :
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