RESUMO
Objective: To find out the impairment of hearing associated with radical mastoidectomy by measuring the quantitative difference in the functional hearing level before and after radical mastoidectomy operation without tympanoplasty
Study Design: Cross-sectional comparative study
Place and Duration of Study: Department of Otorhinolaryngology and Head and Neck Surgery, Bahawal Victoria Hospital, Bahawalpur and PNS Shifa Hospital, Karachi, from November 2009 to January 2013
Methodology: Eighty-five patients, diagnosed clinically as chronic suppurative otitis media with extensive cholesteatoma having history of ear discharge and hearing impairment for more than 6 weeks' duration and requiring radical mastoidectomy for treatment, were included in this study. Pure tone audiogram was done before and after radical mastoidectomy. Hearing impairment was compared in each patient before and after the operation
Results: Among the 85 patients, 54 [63.5%] were males and 31 [36.5%] were females, with the age ranged between 18 to 63 years, mean age being 42.31 +/- 4.8 years. The mean increase in hearing loss after radical mastoidectomy in air conduction was 7.19 dB, bone conduction was 4.16 dB, and air-bone gap was 3.75 dB [<0.001]. The ear became dry and safe in 82 patients [96.5%] out of a total of 85, and only 3 patients required revision surgery at a second stage
Conclusion: Radical mastoidectomy has a least negligible effect on hearing status and one should not limit this technique due to the concern of aggravated hearing in patients with extensive cholesteatoma at the cost of dry and safe ears, which should be of prime importance