Effect of canal widening (type I tympanoplasty) on hearing sensitivity

Authors

  • Prakash Tumkur Kumaraswamy Department of Otorhinolaryngology, All India Institute of Speech and Hearing, Mysuru, Karnataka, India
  • Abhilash Shambulingegowda Department of Otorhinolaryngology and Head and Neck Surgery, Mysore Medical College and Research Institute, Mysuru, Karnataka, India
  • Devi Neelanmegarajan Department of Audiology, All India Institute of Speech and Hearing, Mysuru, Karnataka, India

DOI:

https://doi.org/10.18203/issn.2454-5929.ijohns20204636

Keywords:

Air and bone conduction thresholds chronic otitis media, Hearing sensitivity, Pre-post operation

Abstract

Background: Chronic otitis media (COM) is a chronic inflammation of the middle ear cleft that is characterised by discharge from the middle ear through a perforated tympanic membrane for at least 6 weeks. The pattern and degree of hearing loss greatly vary in individuals with COM. Conductive hearing loss is the most common pattern. This could be managed conservatively or surgically. Mastoidectomy and/or tympanoplasty are frequently used management procedures for COM. The study aimed to investigate the efficacy of the type I tympanoplasty through a canal widening procedure on hearing sensitivity.

Methods: Two groups participated in the study. Group I included 25 participants who underwent type I tympanoplasty with canal widening procedure and group II included 25 participants who underwent type I tympanoplasty without canal widening procedure. The audiometric results of pre-operative condition and post-operative condition at 1 month and 3 months were documented for further analysis.  

Results: The mean difference of pre-post (1 month) air conduction threshold was 12.68 dB in group I and 5.5 dB in group II participants. The mean difference of pre-post (3 month) air conduction threshold was 18.86 dB in group I and 8.24 dB in group II participants. There was a significant difference in thresholds that was obtained between the two groups and across conditions.

Conclusions: The study provides clear evidence that Type I tympanoplasty with canal widening procedure provides a better improvement in hearing sensitivity for individuals with COM, where surgical procedure is an indication.

Author Biography

Abhilash Shambulingegowda, Department of Otorhinolaryngology and Head and Neck Surgery, Mysore Medical College and Research Institute, Mysuru, Karnataka, India

Senior Resident

Department of Otorhinolaryngology and Head and Neck Surgery

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Published

2020-10-23

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Original Research Articles