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Numerous studies have reported an association between nasal obstruction and obstructive sleep apnea syndrome (OSAS), but the precise nature of this relationship remains to be clarified. This paper aimed to summarize data and theories on the role of the nose in the pathophysiology of sleep apnea as well as to discuss the benefits of surgical and medical(More)
In the past, it was thought that hearing loss patients with residual low-frequency hearing would not be good candidates for cochlear implantation since insertion was expected to induce inner ear trauma. Recent advances in electrode design and surgical techniques have made the preservation of residual low-frequency hearing achievable and desirable. The(More)
OBJECTIVE To evaluate electrophysiologically the auditory nerve and the auditory brainstem function of patients with tinnitus and normal-hearing thresholds using the auditory brainstem response (ABR). DESIGN Case-control study. SETTING Ambulatory section of the Department of Otolaryngology, Hospital de Base de Brasília. PATIENTS Thirty-seven(More)
One important role of Enterprise Architecture aims at modeling enterprise artifacts and their relationships, ranging from the high-level concepts to physical ones such as communication networks and enterprise premises. As it is well known, these artifacts evolve over time, as well as their relationships. The dynamic nature of such artifacts has been a(More)
Introduction Analysis of the suppression effect is a simple method to evaluate cochlear status and central auditory mechanisms and, more specifically, the medial olivocochlear system. This structure may be involved in the generation of mechanisms that cause tinnitus and in the pathophysiology of tinnitus in patients with tinnitus and normal hearing.(More)
OBJECTIVE To test the hypothesis that tinnitus begins with outer hair cell dysfunction by recording transient (TEOAE) and distortion product evoked (DPOAE) oto-acoustic emissions in patients with normal hearing with (study group, SG) and without tinnitus (control group, CG). STUDY DESIGN Case control study. SUBJECTS AND METHODS SG had 32 patients with(More)
Endolymphatic sac tumors are low-grade adenocar-cinoma of temporal bone, locally invasive 1-3. Their origin was controversial but showed to originate from endolym-phatic sac and duct epithelium 2,4,5. They are uncommon tumors and occur sporadically, or more frequently, associated with von Hippel-Lindau (VHL) 3,6-8 disease. The most common clinical(More)
OBJECTIVE Although there have been numerous reports on the relationship between the period of aminoglycoside administration and cochlear damage in animals, to date there have been no such studies in humans. The purpose of this study is to observe the early and late cochlear effects of aminoglycoside administration on hair cells, spiral ganglion cells, stria(More)
OBJECTIVE To evaluate the annoyance of tinnitus in normal-hearing patients and to correlate it with outer hair cell function and with anxiety and depression disorders. STUDY DESIGN Case-control study. SETTING Tertiary care medical center. SUBJECTS AND METHODS Sixty-eight patients with tinnitus (study group) and a control group consisting of 46(More)