Semih ÖNCEL, Birgül TUHANİOĞLU, Sanem Okşan ERKAN, Nezahat ERDOĞAN, Zeynel Abidin ERKAN

Superior Semisirküler Kanal Dehissansında Distorsiyon Ürünü Otoakustik Emisyon Ölçüm Değerlerinin Araştırılması

GİRİŞ ve AMAÇ: Süperior semisirküler kanal dehissansı vertigo ile başvuran hastalarda saptanabilen bir hastalıktır. Klinikte vertigo, otofoni, iletim tipi işitme kaybı, nistagmus saptanabilir. Otoakustik emisyon dış tüylü hücrelerin aktivitesine bağlı oluşan, koklea fonksiyonunun monitörizasyonunda kullanılan non-invaziv bir testtir. Biz çalışmamızda superior semisirküler kanal dehissansı olan hastalarda otoakustik emisyon değerlerini araştırdık. YÖNTEM ve GEREÇLER: Hastalar iki gruba ayrıldı. Tek taraf dehissans olan hastaların test kulakları (1.grup), karşı sağlam kulaklar ile, bilateral dehissans olan hastaların kulakları (2.grup), kontrol grubunun (3. grup) aynı taraf kulakları ile distorsiyon product ve sinyal-gürültü oranı ölçümleri yapılarak karşılaştırıldı. BULGULAR: Distorsiyon ürünü otoakustik emisyon ölçümü sonrası amplitüd değerleri ve sinyal gürültü oranı değerleri esas alınarak, 1-8 kHz’ de değerler karşılaştırıldı. Tek taraf dehissans olan olgularda, karşı sağlam kulak ile test kulağı karşılaştırıldığında amplitüd ve sinyal-gürültü oranı değerlerinin test kulağında, sırasıyla 1 ve 6 kHz’de anlamlı olarak düştüğü saptandı (p

Investigation of Distortion Product Otoacoustic Emission Values in Superior Semicircular Canal Dehiscence

INTRODUCTION: Superior semicircular canal dehiscencehas been found in patients with vertigo symptoms. Patients mayhave otophonia, conductive hearing loss, nistagmus withvertigo. Otoacustic emission is a non-invasive test used formonitoring cochlea function due to outer hair cell activity. Inour study we investigated otoacustic emission results insuperior semicircular canal dehiscence patients.METHODS: Patients were divided into two groups. Patientswith unilateral superior semicircular canal dehiscence werecompared with the opposite normal side of their ear, usingdistortion product and signal-noise ratio values at 1-8 kHz.Patients with bilateral semisircular canal dehiscence werecompared with control group patient’s ears.RESULTS: Distorsion product otoacustic emissionmeasurements and signal noise ratio values were significantlydecreased at 1 kHz and 6 kHz in unilateral patientsrespectively(p

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