Prevalence of Perforated Graft in Underlay and Pop-in Technique Myringoplasty
Introduction: Underlay technique myringoplasty is most commonly used technique to repair tympanic membrane perforation by temporalis fascia graft and Trans-tympanic pop-in technique is an another technique that allows temporalis fascia graft placement medial to tympanic membrane remnant through the perforation without the need for tympano-meatal flap elevation. This study was undertaken to find the prevalence of perforated graft in underlay and Pop-in Technique Myringoplasty.
Methods: This descriptive cross-sectional study was done at Manipal teaching hospital, Pokhara, Nepal and comprises of 86 patients between January 2014 and June 2015. Patients undergoing Underlay Trans-canal approach by tympano-meatal flap elevation and Trans-canal, Trans-tympanic pop-in technique were included. Sample size calculation was done and convenient sampling method was applied. Point estimate at 95% CI was done for binary data along with frequency and proportion. The descriptive statistical analysis was done.
Results: The prevalence of perforated graft was 15 (17.4%) at 95% Confidence Interval (39.75-60.25%).
In underlay technique there were 8 (18.60 %) perforation and 35 (81.39%) were intact while in pop-in
technique there were 7 (16.27%) perforation and 36 (83.72%) were intact. The postoperative mean
Pure Tone Average (PTA) of underlay was 9.53 and pop-in was 8.31. The mean Pure Tone Average
(PTA) gain after underlay technique was 16.095 and pop in technique was 16.87.
Conclusions: Trans-tympanic pop-in myringoplasty gives similar hearing & graft uptake results when compared with tympano-meatal flap method of underlay myringoplasty done by trans-canal.
Copyright (c) 2019 Poonam KC, Bhuwan Raj Pandey
This work is licensed under a Creative Commons Attribution 4.0 International License.
JNMA allow to read, download, copy, distribute, print, search, or link to the full texts of its articles and allow readers to use them for any other lawful purpose. The author(s) are allowed to retain publishing rights without restrictions. The JNMA work is licensed under a Creative Commons Attribution 4.0 International License. More about Copyright Policy.