Outcome of Transcanal Endoscopic Interlay Tympanoplasty (type 1) in Inactive Mucosal Chronic Otitis Media (COM) with large Central Perforations

By June 7, 2019

Monjurul, Alam1; Sumaiya, Monjur2
1 Department Otolaryngology and Head-Neck Surgery, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
2 Dhaka Medical Collge, Dhaka, Bangladesh

Type I tympanoplasty, being the most common otological procedure after myringotomy. Interlay technique (graft supported by the mucosal layer medially and the fibrosquamous layer laterally) can easily be performed by endoscope with better wide & panoramic view.

Aims and Objectives:
To study the outcome of transcanal endoscopic interlay tympanoplasty (Type I) in patients with large central perforations  inactive mucosal chronic otitis media (COM) in respect of  graft uptake & hearing improvement.

Materials and Methods:
The prospective study was done at tertiary referral center- Otolaryngology – Head & Neck Surgery dept. of Bangabandhu Shiekh Mujib Medical University (BSMMU) Dhaka, Bangladesh from August 2016 to August 2018. Illegible 217 patients of inactive mucosal COM with large central perforation, who had undergone transcanal endoscopic Type I interlay tympanoplasty were included in this study.

Discussion :
Endoscopic Interlay approach is better than other approaches (Overlay and Underlay) of tympanoplasty type 1.

The graft uptake rate in the present study was found to be 92.7% and 91.3% of the patients reported and improvement in terms of hearing with the mean air- bone gap improving from 27.17 to 10.27dB.

Tympanoplasty done by transcanal endoscopic interlay technique has excellent results both in tems of graft uptake and hearing  improvement with minimal complications. Therefore it should be preferred over the other conventional approaches in patients with large central perforations.