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Σάββατο 17 Μαρτίου 2018

Comparison between clinical and audiological results of tympanoplasty with double layer graft (modified sandwich fascia) technique and single layer graft (underlay fascia and underlay cartilage) technique

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Publication date: June 2018
Source:Auris Nasus Larynx, Volume 45, Issue 3
Author(s): Sanjana Vijay Nemade, Kiran Jaywant Shinde, Pratibha Bharat Sampate
IntroductionSurgical repair of the tympanic membrane, termed a type one tympanoplasty is a tried and tested treatment modality. Overlay or underlay technique of tympanoplasty is common. Sandwich Tympanoplasty is the combined overlay and underlay grafting of tympanic membrane.ObjectiveTo describe and evaluate the modified sandwich graft (mediolateral double layer graft) tympanoplasty using temporalis fascia and areolar fascia. To compare the clinical and audiological outcome of modified sandwich tympanoplasty with underlay tympanoplasty.MethodsA total of 88 patients of chronic otitis media were studied. 48 patients (Group A) underwent type one tympanoplasty with modified sandwich graft. Temporalis fascia was underlaid and the areolar fascia was overlaid. 48 patients (Group B) underwent type one tympanoplasty with underlay fascia technique. 48 patients (Group C) underwent type one tympanoplasty with underlay cartilage technique. We assessed the healing and hearing results.ResultsSuccessful graft take up was accomplished in 47 patients (97.9%) in Group A, in 40 patients (83.3%) Group B, and in 46 (95.8%) patients in Group C. The average Air-Bone gap closure achieved in Group A was 24.4±1.7dB, in Group B, it was 22.5±3.5dB and in group C, it was 19.8±2.6dB. Statistically significant difference was found in graft healing rate. Difference in hearing improvement was not statistically significant.ConclusionDouble layered graft with drum-malleus as a 'meat' of sandwich maintains a perfect balance between sufficient stability and adequate acoustic sensitivity.



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