Η λίστα ιστολογίων μου

Related Posts

Δημοφιλείς αναρτήσεις

Medicine by Alexandros G.Sfakianakis

Medicine by Alexandros G.Sfakianakis,Anapafseos 5 Agios Nikolao

Medicine by Alexandros G.Sfakianakis

OtoRhinoLaryngology - Head and Neck Surgery

Εμφανιζόμενη ανάρτηση

Peripheral positional vertigo and dizziness (PPVD)

The diagnostic framework of peripheral positional vertigo and dizziness (PPVD): a new concept based on the observation of alcohol-induced po...

Πέμπτη, 5 Ιανουαρίου 2017

Audiometric findings with voluntary tensor tympani contraction

Abstract

Background

Tensor tympani contraction may have a "signature" audiogram. This study demonstrates audiometric findings during voluntary tensor tympani contraction.

Methods

Five volunteers possessing the ability to voluntarily contract their tensor tympani muscles were identified and enrolled. Tensor tympani contraction was confirmed with characteristic tympanometry findings. Study subjects underwent conventional audiometry. Air conduction and bone conduction threshold testing was performed with and without voluntary tensor tympani contraction.

Main outcome measure

Changes in air conduction and bone conduction thresholds during voluntary tensor tympani contraction.

Results

Audiometric results demonstrate a low frequency mixed hearing loss resulting from tensor tympani contraction. Specifically, at 250 Hz, air conduction thresholds increased by 22 dB and bone conduction thresholds increased by 10 dB.

Conclusions

Previous research has demonstrated a low frequency conductive hearing loss in the setting of tensor tympanic contraction. This is the first study to demonstrate a low frequency mixed hearing loss associated with tensor tympani contraction. This finding may aid in the diagnosis of disorders resulting from abnormal tensor tympani function. Tensor tympani contraction should be included on the differential for low frequency mixed hearing loss.



http://ift.tt/2j9EruL

Δεν υπάρχουν σχόλια:

Δημοσίευση σχολίου