Sensory neural hearing loss following Tympanomastoid surgery

Authors

  • Fakher Rahim Toxicology research center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  • Ghasem Saki Anatomy and histology departments, Physiology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  • Nader Saki Associated professor of Otolaryngology, Head and Neck Surgery, Hearing & Speech Research Center, Jundishapur University of Medical Sciences, Ahvaz, Iran
  • Soheila Nikakhlagh Assistant Professor of Otolaryngology, Apadana Clinical Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Abstract:

Objective: Generated acoustic trauma by suction and drill may cause sensorineural hearing loss after Tympanomastoid surgery. This study was carried out to determine the relationship of sensorineural hearing loss and chronic otitis media surgery at Ahvaz Jundishapur University of Medical Sciences in Iran. Material and Methods: This prospective study included 386 patients of chronic middle ear disease, which were surgically treated at the department of Otolaryngology of Imam Khomeini and Apadana hospitals in Ahvaz, fromMarch 2008 to March 2011. Drilling duration of tympanomastoid surgery was 26.1±15.5 minutes. The preoperative and postoperative bone conduction thresholds in frequencies 250 to 4000 HZ were obtained one day before and 6-8 weeks after the surgical procedure by one expert audiologist. Result: A total of 386 patients was included in this study. Among them 267 (69.17%) were female and 119(30.83%) of them were male. The patients ranged in age from 6 to 68 years with a mean of 26.15 years. Statistically significant deterioration in bone conduction thresholds was found only with radical mastoidectomy. There was no change in mean bone conduction thresholds in 319 (82.6%) of patients. A total of 38 (9.8%) patients showed worsening of postoperative bone conduction thresholds. Conclusion: Our study has shown that the middle ear surgery in chronic otitis media in majority of the patients does not affect bone conduction thresholds. It is suggested that all ENT surgeons should do chronic otitis media surgery without being worried, but must take all the precaution.

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Journal title

volume 1  issue 2

pages  19- 22

publication date 2012-12-01

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