Size of Tympanic Membrane Perforation and Hearing Loss

Authors

  • Chop Lal Bhusal Tribhuvan University, Institute of Medicine, Maharajgunj, Kathmandu
  • RPS Guragain Tribhuvan University, Institute of Medicine, Maharajgunj, Kathmandu
  • RP Shrivastav Tribhuvan University, Institute of Medicine, Maharajgunj, Kathmandu

DOI:

https://doi.org/10.31729/jnma.459

Abstract

This prospective study was done to assess the level of preoperative hearing impairment in different
sizes of pars tensa perforation in patients with chronic suppurative otitis media (CSOM) tubotympanic
type undergoing myringoplasty. A total of 50 patients were recruited from the outpatient
Department of Otorhinolaryngology - Head and Neck Surgery from June 2003 to May 2004. Cases
of CSOM tubo-tympanic type with dry central perforation, conductive type of hearing loss were
subjected to myringoplasty. Preoperative audiometric evaluations were done. While operating under
microscope diameter of perforations were measured and perforations were grouped according
to the size.
It was observed that greater hearing loss was reported in group D perforation (44dB), where as in
group A, it was 31 dBHL. The average hearing loss at 500Hz was 46.40dB, at 1000Hz was 30.90 dB
and at 2000Hz it was 31.9 dB. This shows that the hearing loss is more at lower frequencies and
less as the frequencies increase. This study shows that as the size of perforation is increased, the
hearing loss also increases. The hearing loss is more marked at lower frequencies as compared to
higher frequencies.

Key Words: Hearing loss, Myringoplasty, Tympanic membrane perforation

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Published

2006-01-01

How to Cite

Bhusal, C. L., Guragain, R., & Shrivastav, R. (2006). Size of Tympanic Membrane Perforation and Hearing Loss. Journal of Nepal Medical Association, 45(161). https://doi.org/10.31729/jnma.459

Issue

Vol. 45 No. 161 (2006)

Section

Original Article

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