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Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

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Updated: Jun 29, 2025

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct

Surgical Induction of Endolymphatic Hydrops by Obliteration of the Endolymphatic Duct

Published on: January 22, 2010

Functional outcomes and caloric response changes after endolymphatic sac decompression.

Comert Sen¹, Murat Ulusan¹, Eren Yilmaz²

¹Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Istanbul, Turkey.

American Journal of Otolaryngology

|March 27, 2024

Summary

This summary is machine-generated.

Endolymphatic sac decompression (ESD) surgery for Ménière's disease significantly improves daily function without negatively impacting hearing or vestibular responses. This procedure offers a safe option for patients with bilateral or unilateral conditions.

Keywords:

Caloric testing Endolymphatic sac decompression Endolymphatic sac surgery Meniere disease Vestibular testing

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Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease

Endolymphatic Duct Blockage as a Surgical Treatment Option for Ménière's Disease

Published on: April 28, 2023

Area of Science:

Otolaryngology
Neurosurgery
Vestibular Disorders

Background:

Ménière's disease is a chronic inner ear disorder.
Endolymphatic sac decompression (ESD) is a surgical option for Ménière's disease.
The impact of ESD on caloric response, hearing, and functional outcomes requires further evaluation.

Purpose of the Study:

To assess changes in caloric response after endolymphatic sac decompression (ESD).
To evaluate hearing outcomes and functional benefits following ESD.
To determine the efficacy of ESD in managing Ménière's disease.

Main Methods:

Retrospective chart review of patients undergoing ESD at a tertiary referral center.
Analysis of audiological results, including pure-tone threshold averages.
Assessment of vestibular function via caloric testing and functional level scale scores.

Main Results:

Twenty-eight patients were included in the study with an average follow-up of 25 months.
Endolymphatic sac decompression (ESD) did not significantly alter postoperative pure-tone threshold averages or reduced vestibular response (RVR) values.
Significant improvements were observed in functional level scores post-ESD.

Conclusions:

Endolymphatic sac decompression (ESD) is a viable surgical option for Ménière's disease.
ESD preserves hearing and vestibular function while enhancing daily functional levels.
The procedure is suitable for both bilateral and unilateral Ménière's disease due to its functional preservation.