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Titolo:
EFFECT OF PERILYMPHATIC FISTULAS ON EVOKED OTOACOUSTIC EMISSIONS IN THE GUINEA-PIG
Autore:
KOKESH J; NORTON SJ; DUCKERT LG;
Indirizzi:
UNIV WASHINGTON,DEPT OTOLARYNGOL HEAD & NECK SURG RL-30 SEATTLE WA 98195 UNIV WASHINGTON,DEPT OTOLARYNGOL HEAD & NECK SURG RL-30 SEATTLE WA 98195
Titolo Testata:
The American journal of otology
fascicolo: 4, volume: 15, anno: 1994,
pagine: 466 - 473
SICI:
0192-9763(1994)15:4<466:EOPFOE>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACOUSTIC-DISTORTION PRODUCTS; SUDDEN HEARING-LOSS; EXPERIENCE; ECOG; EAR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
J. Kokesh et al., "EFFECT OF PERILYMPHATIC FISTULAS ON EVOKED OTOACOUSTIC EMISSIONS IN THE GUINEA-PIG", The American journal of otology, 15(4), 1994, pp. 466-473

Abstract

Round window perilymphatic fistuals were surgically created in 20 guinea pigs. Distortion product otoacoustic emissions (DPOAEs) at 2f1 - f2 were recorded prior to and immediately following laceration of the round window. The stimuli were equal level sinusoids (f1 < f2) with f2 ranging from 2 to 10 kHz, a fixed f2:f1 ratio of 1.25, and stimulus levels (L2 = L1) ranging from 20 to 80 dB SPL. After an 18-day survival period, emission measurements were repeated, and fluorescein was infused into the cerebrospinal fluid to verify patency or closure of the fistula. Nine animals demonstrated patent fistulas, whereas 11 had closed fistulas. There was a statistically significant reduction in DPOAE amplitudes after an acute fistula across all stimulus levels (p < .001). At 18 days the DPOAE amplitudes in animals with healed fistulas could not be differentiated from controls, whereas DPOAE amplitudes in animals with patent fistulas were statistically different from controls (p < .05). The results suggest that evoked otoacoustic emissions may beuseful in detecting perilymphatic fistulas.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 11:36:24