Disturbance of any of the ET functions may contribute to the development of otitis media. Sonotubometry measures the ventilatory function using sound. The qualities of sonotubometry as a test for eustachian tube ventilatory function have been studied by various investigators. The development of the method is described in the review, and a summary of the study results is provided to make an estimate of the diagnostic potential of this eustachian tube function test.
The English-language literature on the topic was searched systematically by Medline and Pubmed using the following key words: ventilatory function, eustachian tube, sonotubometry, and function test. There were no limits for the year of publication.
Articles that described the method itself (validity, reproducibility, diagnostic value) were studied in detail.
All the articles described in study selection were used for this review.
The technique of sonotubometry has been improved gradually over the years. The results of sonotubometry are at least as good as those of other function tests. However, because the results still tend to be ambiguous in children and otitis media is most common in this population, the reproducibility and application of sonotubometry must be evaluated further. Sonotubometry has great advantages over other function tests, but it is not used routinely to assess eustachian tube ventilatory function because its value for clinical practice has not yet been adequately demonstrated. The review showed that sonotubometry can be improved further and that efforts to do so seem justified because it forms a particularly promising method to assess eustachian tube function in children with suspected eustachian tube disease.
[Show abstract][Hide abstract] ABSTRACT: Even though aural fullness is ubiquitous among patients presenting to otolaryngology clinics, the association between aural fullness and disease development has not yet been clearly determined.
Our study was performed on outpatients from June 2006 to February 2010 whose major complaint was "ear fullness", "aural fullness", or "ear pressure". We assessed their demographic and clinical characteristics, including sex, associated diseases, symptoms, otoscopic findings, audiology test results, and final diagnoses.
Among 432 patients, 165 (38.2%) were males and 267 (61.8%) were females, with mean ages of 42±19 years and 47±17 years, respectively. Tinnitus, hearing disturbance, autophony (p<0.01) as well as nasal obstruction and sore throat (p<0.05) showed a statistically significant correlation with aural fullness. Among patients who complained of hearing fullness, tests and measures such as impedance audiometry, speech reception threshold, and pure tone audiometry generated statistically significant results (p<0.05). Ear fullness was most frequently diagnosed as Eustachian tube dysfunction (28.9%), followed by otitis media with effusion (13.4%) and chronic otitis media (7.2%). However, 13.4% of patients could not be definitively diagnosed.
Among patients complaining of ear fullness, Eustachian tube dysfunction, otitis media with effusion, chronic otitis media were most commonly observed. Performance of otoscopy, nasal endoscopy, the Valsalva maneuver, and additional audiological tests is necessary to exclude other diseases.
Yonsei medical journal 09/2012; 53(5):985-91. DOI:10.3349/ymj.2012.53.5.985 · 1.29 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: The transient behavior of a Brownian motor is investigated for more detailed particle transport occurring therein. The asymmetric nature of the time-dependent mean particle velocity is examined during the transition between two different levels of thermal noise. The possibility of current inversion is also investigated. It is found that the detailed shape of the asymmetric potential is crucial for such an inversion to occur.
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