Multiple ASSRs may reliably predict the behavioral threshold in subjects with SNHL and may serve as a valuable objective measure for assessing the hearing threshold across different frequencies in candidates for cochlear implants and children with auditory neuropathy.

A study of the Eustachian tube, incorporating nasendoscopy, tympanometry and pressure swallow test was undertaken in patients undergoing uvulopalatopharyngoplasty. Marked negative middle ear pressure indicating impairment of tubal function was found during the first 7 postoperative days. In patients receiving antibiotic treatment the Eustachian tube dysfunction was significantly alleviated. This dysfunction is probably due to a postoperative infective inflammatory process in the tonsillar fossa. Antibiotic treatment is recommended for patients undergoing uvulopalatopharyngoplasty, to improve the postoperative course. Patients with middle ear abnormalities and following middle ear surgery could be high-risk candidates for this operation and should be carefully evaluated.

The phonetic activity of the velopharyngeal valve has been the subject of electromyographic, radiological, ultrasonic, endoscopic, and of various acoustic and aeromechanical investigations. The subject of the present study was the non-phonetic activities of the velopharyngeal valve. Ten patients were assessed by nasendoscopic examinations of the velopharyngeal valve. The pressure gradients in the nasopharynx during these activities were recorded. Typical individual nasopharyngeal pressure patterns were revealed inducing a development of a special technique and tests for a further study of the non-phonetic activities of the velopharyngeal valve in correlation with its abnormality and pathological speech activities.

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