Tympanic membrane perforation: correlation of hearing loss with its site and size

Abstract

<p class="abstract"><strong>Background:</strong> The objectives of the study were <span lang="EN-IN">correlation of hearing loss with size and site of tympanic membrane perforation. </span></p><p class="abstract"><strong>Methods:</strong> <span lang="EN-IN">A cross-sectional prospective study of 100 patients of both sex and age between 11-60 years with perforated tympanic membrane was conducted in the department of Otorhinolaryngology (ENT). Size and site of TM perforation was assessed using otoscope and otomicroscope. Size of perforation was measured with 1 mm thin wire loop and vernier caliper. Patients were divided into three groups according to size; Group I (0-9 mm), Group II (9-30 mm), Group III (>30 mm). The tympanic membrane was divided into five segments anterosuperior, posterosuperior, anteroinferior, posteroinferior and central for the localization of the site of perforation. Data thus collected was statistically analysed. </span></p><p class="abstract"><strong>Results:</strong> <span lang="EN-IN">Patients with Group I perforation had an average hearing loss of 31.42±7.15 decibel. Group II had an average hearing loss of 39.42±8.97 decibel. Group III had an average hearing loss of 48.91±7.38 decibel. Maximum hearing loss was noted in patients with central perforation with an average hearing loss of 39.34±9.47 decibel. Average hearing loss was found higher in posterior perforations than anterior quadrant perforations. This difference was however not statistically significant with ‘p’ value of ‘0.689’. </span></p><p class="abstract"><strong>Conclusions:</strong> <span lang="EN-IN">Linear correlation was found between size of tympanic membrane perforation and degree of hearing loss. No linear correlation between site of tympanic membrane perforation and hearing loss was found. We found no correlation between duration of disease and size of tympanic membrane perforation with degree of hearing loss.</span></p>

Study on impact of duration of tympanic membrane perforation on hearing loss and audiological outcome after surgery

“…8 The most common symptom in our study was otorrhea with hearing loss in 64%, followed by otorrhea only in 19%, otorrhea with otalgia in 7% and tinnitus with otalgia in 6% patients. Gulati et al 15 in their study reported that main symptoms was hearing loss and otorrhea similar to our findings whereas, Sood et al observed otorrhea in 98%, consistent with results of Kumar et al and Nahata et al 7,8,16 All the ears included in our study had a mild degree of hearing loss. One possible reason may be the exclusion of unsafe ears and ears with ossicular and mastoid pathology from the study.…”

“…The highest number of ears was seen in group III (72%), while the lowest number was seen in group I (3%). This was consistent with Nahata et al who found that group III was most commonly involved (43%), while group I was most commonly involved (47%) in the study of Pannu et al and Sood et al 7,8,12 However, John et al in his study, observed that group II had highest number of perforations (62%). 17 In our study, we did not find any significant correlation between duration of symptoms and the degree of hearing loss.…”

“…In our study, the most commonly affected age group was 21-30 years (33%) (Table 1). Our observation was similar to Sood et al 7 but differed from the studies of Nahata et al and Bhusal et al 8,9 where the most common age group was 15-24 years.…”

“…This is in agreement with Sood et al who also observed no correlation between duration of symptoms and degree of hearing loss. 7 The degree of hearing impairment (in the 30 to 60 dB range) is poorly correlated with the extent of tissue destruction, because inflammatory tissue in the tympanic cavity can itself conduct acoustic vibrations and thus partly compensate for a pathological deficit. 18 However, Maharjan et al in their study found a strong correlation between duration of ear discharge and degree of hearing loss.…”

Degree of Hearing Loss in Inactive Mucosal Chronic Otitis Media and Its Correlation With Site and Size of Tympanic Membrane Perforation- An Observational Study

“…Similar observations have been reported in the earlier literature as well. Sood et al [25] reported that 79% of patients were less than 40 years of age in their study. While as Ediale et al [26], Bhusal et al [27], and Rana et.…”