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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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Anatomy CochleaAnatomy Cochlea

Mekanisme CochleaMekanisme Cochlea

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Speaker Speaker ＆＆ MicrophoneMicrophone

Instrumentasi OAEInstrumentasi OAE

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JENIS OAEJENIS OAE

Cara kerja TEOAECara kerja TEOAE

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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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Click stimulation

Resonance

Slow Component

Fast component

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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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DPOAE GRAMDPOAE GRAM

DPOAE GRAMDPOAE GRAM

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TERIMA KASIHTERIMA KASIH

SEMOGA BERMANFATSEMOGA BERMANFAT