Change in endolymphatic hydrops 2 years after endolymphatic sac surgery evaluated by MRI
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- Higashi-Shingai Kayoko
- Department of Otolaryngology, Yao Municipal Hospital
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- Imai Takao
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Okumura Tomoko
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Uno Atsuhiko
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka General Medical Center
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- Kitahara Tadashi
- Department of Otorhinolaryngology-Head and Neck Surgery, Nara Medical University
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- Horii Arata
- Department of Otorhinolaryngology-Head and Neck Surgery, Niigata University Graduate School of Medicine and Dentistry
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- Ohta Yumi
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Osaki Yasuhiro
- Department of Otolaryngology, Kinki University Faculty of Medicine
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- Sato Takashi
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Okazaki Suzuyo
- Department of Otolaryngology, Osaka City General Hospital
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- Kamakura Takefumi
- Department of Otorhinolaryngology, Otemae Hospital
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- Takimoto Yasumitsu
- Department of Otolaryngology, Osaka Police Hospital
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- Ozono Yoshiyuki
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Watanabe Yoshiyuki
- Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine
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- Imai Ryusuke
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Hanada Yukiko
- Department of Otolaryngology, National Hospital Organization Osaka National Hospital
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- Ohata Kazuya
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Oya Ryohei
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
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- Inohara Hidenori
- Department of Otorhinolaryngology-Head and Neck Surgery, Osaka University Graduate School of Medicine
Bibliographic Information
- Other Title
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- MRI で評価した内リンパ嚢開放術後2年の内リンパ水腫の変化について
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Description
This study was performed to determine whether endolymphatic sac surgery improves vestibular and cochlear endolymphatic hydrops 2 years after sac surgery and to elucidate the relationship between the degree of improvement of endolymphatic hydrops and the changes in vertigo symptoms, the hearing level, and the summating potential/action potential ratio (-SP/AP ratio) by electrocochleography (ECochG) in patients with Ménière's disease (MD).Twenty-one patients with unilateral MD who underwent sac surgery were included in this study. All patients underwent gadolinium-enhanced magnetic resonance imaging (Gd-MRI) before and 2 years after sac surgery. We evaluated the difference in vestibular and cochlear endolymphatic hydrops between before and after surgery in both ears and compared these findings with the frequency of vertigo attacks, hearing level, and ECochG findings.In affected ears, the presence of vestibular endolymphatic hydrops and the frequency of vertigo attacks significantly decreased after surgery. However, affected ears showed no significant improvement in the presence of cochlear endolymphatic hydrops or the -SP/AP ratio by ECochG; there was also no significant improvement or deterioration in the hearing level.The present findings suggest that sac surgery reduces vestibular endolymphatic hydrops and prevents aggravation of cochlear endolymphatic hydrops, and these changes lead to a reduction of vertigo attacks and suppress the progression of hearing impairment associated with vertigo attacks.
Journal
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- Nippon Jibiinkoka Gakkai Kaiho
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Nippon Jibiinkoka Gakkai Kaiho 123 (9), 1214-1215, 2020-09-20
The Oto-Rhino-Laryngological Society of Japan, Inc.