November, 2017 2017; Vol1; Issue10 http://iamresearcher.online To Cite This Article: Hoda Ali Ibrahim, Randa A Abdallah, Gehan Saied Shalaby, Soaad Yahea, Mariam Alkandari. The Impact of Unilateral Nasal Obstruction Upon Middle Ear Ventilation of Both Sides: A Prospective Comparative Study. International Annals of Medicine. 2017;1(10). https://doi.org/10.24087/IAM.2017.1.10.341 The Impact of Unilateral Nasal Obstruction Upon Middle Ear Ventilation of Both Sides: A Prospective Comparative Study Hoda Ali Ibrahim 1 , Randa A Abdallah 1 , Gehan Saied Shalaby 1 , Soaad Yahea 1 , Mariam Alkandari 2 1 AL Azhar University Hospitals, Cairo, Egypt 2 AL Sabah Hospitals, Kuwait Corresponding Author: Randa A Abdallah randa.atwa@yahoo.com ABSTRACT Aim: to determine the effect unilateral nasal obstruction on the middle ear pressure, Eustachian tube function and the type of Tympanometry of both ears before and after operation. Patients and Methods: Total 70 patients with unilateral nasal were recruited for this study. Tympanometry, Eustachian tube function and middle ear pressure were compared for all patients before and after operation. Result: 39 patients had type A tympanogram,8 type B and 24 type C before operation for the same side of ACP while for the other side there were (50 type A, 2 type B and 15 type C) tympanogram patients but after FESS operation there were (55 type A,1type B and 14 type C) tympanogram patients for the same side and (68 type A, 0 type B and 2 type C) tympanogram for the other side. also middle mean ear pressure for the same side before surgery was (-125± -9.3) and (-92.42± -7.4) for the other side and became (- 45.14± -6.39) for the same side and (38.3±6.1) for other side, while ETF tests were bad for all ears on the same side of lesion and for (45) ears on the other side before surgical correction of nasal obstruction which became good ETF tests for all (70) patients on both sides. Furthermore, there were no significant correlations between type of tympanogram, middle ear pressure or ETF tests with the age and sex of patients. Conclusion: there was a definite relationship between nasal obstruction and type of tympanogrsm, MEP and ETF. Good Eustachian tube function tests aren’t always associated with type A tympanogram. Keywords: middle ear pressure, tympanometry, Eustachian tube function, antrochoanal polyp 1. INTRODUCTION Eustachian tube roles as a connection between two major cavities of interest, the middle ear cleft and the nasopharynx, also it preserves ear ventilation with maintaining a good middle ear pressure and cleaning of the ear being a drainage route (Bluestone C.D. et al.1988) (1) . Nasal pathology was considered as one of the major causes of Eustachian tube dysfunction leading to interference of its function performance (Ciprandi G., et al 2005) (2) . Middle ear diseases are usually associated with nasal obstruction. It is clear for all surgeons that nasal obstruction interferes with the function of auditory tube and impact middle ear ventilation and pressure (Lildholdt T et al, 1980) (3) .many authors have proved the pathogenesis of otitis media has been caused by any prior or concurrent nasal disease as upper respiratory tract infection and allergic rhinitis (Sims E.J. et al,2002) (4) .