NASAL OBSTRUCTION AND EUSTACHIAN TUBE DYSFUNCTION: HOW ARE THEY RELATED?
The eustachian tube is an osteocartilaginous tube that connects the middle ear with the nasopharynx. It has been suggested that any pathology affecting the nose, paranasal sinuses or nasopharynx may lead to Eustachian tube dysfunction and middle ear hypoventilation. Hence, we decided to take up a study to assess the effect of nasal obstructive lesions on the Eustachian tube function by Impedance Audiometry and to see if it improves or not after corrective surgery. The present study was conducted prospectively in 44 patients with a male: female ratio of 2.14:1 and age ranging from 18 to 68 years, having abnormal tympanogram (type B/C) in at least one ear who underwent nasal surgery for nasal obstructive lesions. The study favors the observation that surgery for nasal obstruction significantly improves tubal function and middle ear ventilation by 4 weeks postoperatively. Nasal obstructive lesions lead to Eustachian tube dysfunction by causing airflow turbulence in the postnasal space as a result of asymmetrical airflow in the two nasal passages. Hence, corrective surgery for nasal obstruction should be considered at least 4 weeks before undertaking the middle ear surgery to improve middle ear ventilation, thereby improving the success rates of middle ear surgery.
KEYWORDS: Eustachian tube, paranasal sinuses, osteocartilaginous, nasopharynx.
Copyright (c) 2018 Nudrat Parvez Kamal, Vivek Harkare
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