Otolaryngology, Head and Neck Surgery
Objective: To determine the association between site and size of perforation of the tympanic membrane and the level of conductive hearing.
Methods: The cross-sectional study was conducted from November 2015 to October 2016 at Aga Khan University Hospital Karachi and comprised patients with tympanic membrane perforation without any other middle-ear disease. Karl-Storz Rigid Endoscope attached to a camera was used to take pictures of the tympanic membrane. Site of the perforation was determined using a vertical line to divide the membrane into two anterior and posterior halves. Size of the perforation was calculated as a percentage of the total membrane using Image J software. Data analysis was done using Stata 12.
Results: Of the 55 patients, 29(53%) were males and 26(47%) were females. The overall mean age was 33+/-15 years. With every 5% increase in the size of perforation, the hearing loss increased by 1 decibel. A difference of 5.5 decibels was noted between anterior and posterior perforations of similar size.
Conclusion: Hearing loss increased with increase in the size of perforation.
JPMA. The Journal of the Pakistan Medical Association
(2021). Use of endoscope in teaching of otolaryngology residents about site and size of tympanic membrane perforation and its impact on degree of hearing loss in adult patients: A cross sectional study. JPMA. The Journal of the Pakistan Medical Association, 71(1(Suppl 1)), S14-S17.
Available at: https://ecommons.aku.edu/pakistan_fhs_mc_surg_otolaryngol_head_neck/126