The Influence of Incudostapedial Joint Separation on the Middle Ear Transfer Function
Clinical and Experimental Otorhinolaryngology
;
: 250-253, 2014.
Artículo
en Inglés
| WPRIM
| ID: wpr-85668
ABSTRACT
OBJECTIVES:
One of the risks in middle ear surgery is high frequency hearing loss. It is believed that manipulations on the middle ear ossicles with the instruments may cause overstimulation of the inner ear and damage of the hear cells. Controversy arises whether temporary separation of the ossicles has any impact on middle ear transfer function and hearing threshold after surgery. The aim of the study is to evaluate the influence of incudostapedial joint (ISJ) separation on middle ear function in an experimental model.METHODS:
With the use of single point laser Doppler vibrometer (LDV) stapes velocity in the intact chain and after ISJ separation was measured in 5 fresh human cadaver temporal bones.RESULTS:
In all cases there was a decrease in stapes velocity after ISJ separation. Mead stapes velocity was reduced for 1 dB in 800 Hz to 9 dB in frequencies above 1,000 Hz. The decrease of velocity was greater in higher frequencies.CONCLUSION:
Separation of the ISJ does not reduce significantly the middle ear function.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Estribo
/
Hueso Temporal
/
Cadáver
/
Flujometría por Láser-Doppler
/
Oído Medio
/
Audición
/
Pérdida Auditiva
/
Articulaciones
/
Oído Interno
/
Modelos Teóricos
Límite:
Humanos
Idioma:
Inglés
Revista:
Clinical and Experimental Otorhinolaryngology
Año:
2014
Tipo del documento:
Artículo
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