Pattern of tympanic membrane perforation in a tertiary hospital in Nigeria.

BACKGROUND/OBJECTIVES: Tympanic membrane perforation is a common otological disorder with associated hearing impairment. This study aimed at determining the clinicoepidemiological pattern, etiological factors, clinical presentation, and management of tympanic membrane perforation in a tertiary hospital in Nigeria.

MATERIALS AND METHODS

This was a prospective, hospital-based study of patients with the clinical finding of perforated tympanic membrane. The study was carried out over a period of 5 years (September 2012 to August 2017). Interviewer-assisted questionnaire was administered to obtain the detailed history and clinical findings from consenting patients. Data collected were collated and analyzed using SPSS version 16.0.

RESULTS

: A total of 529 patients had tympanic membrane perforation, of which 368 (69.6%) were males and 161 (30.4%) were females with a male-to-female ratio of 2:1. The prevalence of tympanic membrane perforation in this study was 7.8%. The most common presenting symptom among the patients was otorrhea in 81.5%, otalgia in 72.8%, and tinnitus in 55.7%. Acute suppurative otitis media was a cause of tympanic membrane perforation in 28.4% of the patients while 55.7% of the patients proceed to chronic suppurative otitis media. Unilateral tympanic membrane perforation was 79.0%. The left ear tympanic membrane perforation was 43.9%. Grade 1 tympanic membrane perforation accounted for 39.3% while grade 2 accounted for 32.3%. The most common types of tympanic membrane perforation were central in 38.2%, anterior central in 32.3%, and posterior central in 19.3%. Conductive hearing impairment accounted for 61.6% while sensorineural hearing impairment 25.3%. The most common degrees of hearing impairment were mild and moderate and accounted for 47.1% and 25.1%, respectively. The most common complications of tympanic membrane perforation were hearing impairment in 52.6%. Majority of the patients (425) were treated conservatively, six had fat patches, while 98 were treated surgically. Tympanic membrane perforation healed at the end of 3 months in 81.5%, while 18.5% did not heal after 3 months.

CONCLUSION

Tympanic membrane perforation arises mainly from middle ear infections and traumatic causes. At presentation, size and location of perforation vary which depend on duration of infection or the traumatic causes.