The frequency of patulous Eustachian tubes in pregnancy

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Abstract
Pregnant women (270) were examined for patulous Eustachian tubes. The diagnosis was performed with a Madsen Zo 70 electroacoustic impedance bridge. Patients (19) had patulous Eustachian tubes in 1 or both ears as evidenced by impedance variations synchronous with the respiration. Only 5 of these women had any subjective symptoms. Nine other women had symptoms, but their Eustachian tubes were closed at the time of examination. The duration of the gestation, estrogen production and weight gain during pregnancy were investigated. A significant correlation exists between patulous Eustachian tube and elevated serum estriol values.

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