Abstract
Introduction: CSOM is the common chronic infectious disease and is considered the leading cause of acquired hearing loss. Hearing loss is a public health problem in developed and developing countries. Material and methods: A prospective cohort observational study on 100 Cases in two groups of 50 each who had safe CSOM and 50 Unsafe CSOM conducted over a period of July 2011 to September 2013 at Department of Otorhinolaryngology Padmashree Dr. D. Y. Patil Medical College, Hospital and Research Centre, DPU, Pimpri, Pune. Detailed history, complete ENT examination was done. They were then subjected to Puretone audiometry; air and bone conduction thresholds were tested and plotted on the audiogram. Univariate and multivariate logistic regression (odds ratio) analyses were used. Results: In the present study the degree of sensorinueral component of hearing loss was >35db in majority of the cases. The mean bone conduction threshold values were obtained by mean value of threshold at frequencies 250, 500, 1000, 2000 and 4000 Hz. Higher speech frequencies were affected in majority of patients. Greater sensorineural component was found in CSOM with cholesteatoma. Greater incidence of hearing loss with increasing duration of disease. Conclusion: These findings demonstrate that CSOM is associated with some degree of SNHL and cochlear damage, and higher frequencies are more affected. Increasing age can act as a precipitating factor in this disease process.
Highlights
Chronic suppurative otitis media (CSOM) is the common chronic infectious disease and is considered the leading cause of acquired hearing loss
This study found greater incidence of hearing loss with increasing duration of disease, the incidence of SNHL component has correlation with duration of disease. > 35db hearing loss in 9 cases which is maximum 13-30 months
CSOM is associated with mixed hearing loss mainly >35dB, higher frequencies were involved
Summary
CSOM is the common chronic infectious disease and is considered the leading cause of acquired hearing loss. They were subjected to Puretone audiometry; air and bone conduction thresholds were tested and plotted on the audiogram. Results: In the present study the degree of sensorinueral component of hearing loss was >35db in majority of the cases. Greater incidence of hearing loss with increasing duration of disease. Chronic suppurative otitis media (CSOM) is the chronic inflammation of the middle ear fossa with discharge through a perforated tympanic membrane [1]. It is acknowledged that size and site of tympanic membrane perforation is proportional to degree of hearing loss but there are many studies which suggests otherwise. This study is carried out to find out the relation between size
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