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Cochlear function after type-1 tympanoplasty: endoscopic versus microscopic approach, a comparative study

  • Otology
  • Published:
European Archives of Oto-Rhino-Laryngology Aims and scope Submit manuscript

Abstract

Purpose

To investigate and compare the effect of endoscopic and microscopic type 1 tympanoplasty on the cochlear function, to determine if they have a different impact on the inner ear function.

Methods

72 ears treated by transcanal endoscopic type 1 tympanoplasty and 84 ears treated by microscopic type 1 tympanoplasty in 3 tertiary referral centers were enrolled in the study. Microscopic type 1 tympanoplasty were performed by transcanal or retroauricular approach. Only patients with mobile and intact ossicular chain were involved in the study. A retrospective chart review was performed. Main outcome measures were: (1) change in bone conduction thresholds at 250, 500, 1000, 2000, 4000 Hz; (2) change in bone conduction Pure Tone Audiometry; (3) correlation of audiometric outcomes with surgical technique, graft type and graft position.

Results

A mild postoperative bone conduction threshold shift was observed at 2000 Hz and 4000 Hz in both groups, without significant differences between the two groups. No statistically significant modifications in bone conduction were observed at any frequencies in patients operated by transcanal endoscopic approach compared with those who underwent transcanal or retroauricular microscopic type 1 tympanoplasty. Moreover, neither the placement nor the type of the graft seemed to influence the cochlear function preservation.

Conclusions

The endoscopic and the microscopic approaches have a similar impact on the bone conduction threshold during type 1 tympanoplasty. In particular, the one-handed manipulation of the ossicular chain during the endoscopic technique did not show an increased risk of inner ear damage.

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Funding

No funding is reported for the present study.

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Authors and Affiliations

  1. Department of Otorhinolaryngology Head and Neck Surgery, University Hospital of Modena, Modena, Italy

    Cecilia Botti, Matteo Fermi, Livio Presutti & Ignacio Javier Fernandez

  2. Department of Otorhinolaryngology Head and Neck Surgery, Ospedale Maggiore, Bologna, Italy

    Luca Amorosa

  3. Otorhinolaryngology Unit, Department of Surgery, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy

    Angelo Ghidini

  4. Department of Audiology, Arcispedale Santa Maria Nuova, IRCCS, Reggio Emilia, Italy

    Giovanni Bianchin

Authors
  1. Cecilia Botti
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  2. Matteo Fermi
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  3. Luca Amorosa
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  4. Angelo Ghidini
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  5. Giovanni Bianchin
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  6. Livio Presutti
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  7. Ignacio Javier Fernandez
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Correspondence to Cecilia Botti.

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Botti, C., Fermi, M., Amorosa, L. et al. Cochlear function after type-1 tympanoplasty: endoscopic versus microscopic approach, a comparative study. Eur Arch Otorhinolaryngol 277, 361–366 (2020). https://doi.org/10.1007/s00405-019-05706-z

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  • DOI: https://doi.org/10.1007/s00405-019-05706-z

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