Eustachian Tube Function in Chronic Otitis Media

Abstract

Eustachian tube function was examined in 45 patients with chronic otitis media who underwent middle ear surgery. In 80% of patients, the forced opening pressure of the tube was normal. About half of the patients could equilibrate applied negative middle ear pressure by swallowing. Clearance function as examined by dye technique was not impaired in 70% of patients. Patients with otorrhea showed no statistical difference in ventilatory or clearance function from those with dry ears. However, pathological changes around the tympanic orifice were related to the clearance function of the tube. These results suggest that eustachian tube function in chronic otitis media is not significantly impaired.