Does Successful Myringoplasty Affect Eustachian Tube Function?

Eustachian tube (ET) is a tube connecting the middle ear cavity with the nasopharynx and has an important role in equalization of pressure around TM. Many studies investigated the role of ET function tests on the results of myringoplasty/tympanoplasty. Our aim is to assess the effect of successful myringoplasty on Eustachian tube function. A prospective study included 37 patients admitted to the E.N.T Department at Sohag University Hospital in the period between March 2018 and March 2019 suffering from dry central perforation necessitating myringoplasty. Pre-operative E.T function tests using tympanometry and methylene blue dye test were done. Post-operative follow-up tympanometry was done after 3 months for those with successful myringoplasty and compared to the preoperative assessment. Thirty-one (83%) patients had functioning ET, 6 (17%) had non-functioning ET and 32 patients (86.5%) had successful myringoplasty (taken healthy graft). According to the effect of myringoplasty on ET function test 3 months following surgery, (9%) were affected, either improved (3%) or worsen (6%), while (91%) were not affected by tympanometry in those with taken healthy graft cases. In our study, there was no significant effect of myringoplasty on E.T function.