[Study on mechanism of eustachian tube active opening ventilation and pump-like function].
A modified methods for assessing the eustachian tube function (ETF) in patients with traumatic tympanic membrane perforation and otitis media were developed by using a custom-designed ETF measuring instrument. These methods consist of dynamic flow swallow test (DFST), positive pressure swallow test (PST), negative pressure swallow test (NST) and micro-negative pressure swallow test (MNST). With these methods, the graphs and parameters presenting ET active opening function were obtained. The results suggested that the ET active swallow opening is a rather complex process of biomechanical action. It is not only closely related to the function of middle ear ventilation but also related to pump-like function and the protective function against reflux infection from nasopharynx.
Zhang
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Affiliated Hospital of Hainan Medical College, Haikou.
Huang
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D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D002648:Child; D003679:Deglutition / Q000502:physiology*; D005064:Eustachian Tube / Q000503:physiopathology*; D006801:Humans; D010033:Otitis Media / Q000503:physiopathology; D018058:Tympanic Membrane Perforation / Q000503:physiopathology