André Sampaio

Learn 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)
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)
OBJECTIVE The objective of this study is to evaluate the efficacy of sucralfate in alleviating posttonsilectomy morbidity in a pediatric group of patients. METHODS A prospective, double-blind, randomized, and placebo-controlled study comparing the irrigation of a solution containing either 1g of sucralfate (study group) or 1g of lactulose (control group)(More)
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)
Pneumolabyrinth is a condition in which air is present in the vestibule and/or in the cochlea. Air inside the inner ear structures is uncommon, and is not detected even in otic capsule-violating fractures or in transverse fractures of the temporal bone. It is rarely described in the literature. We present a longitudinal computed tomography (CT) study of a(More)
OBJECTIVE To assess and correlate tinnitus annoyance in normal-hearing patients with auditory brainstem response and with anxiety/depression. METHODS A sample of 84 individuals with tinnitus and normal hearing levels (pure-tone thresholds ≤25 dB HL) was compared to a matched control group of 47 normal-hearing individuals without tinnitus. All participants(More)
OBJECTIVE Our goal was to establish the role of VOR - vestibular ocular reflex - in predicting cerebral death in comatose patients. PATIENTS AND METHODS Prognosis study based on three concurrent cohorts of comatose patients of known etiology followed until the ultimate outcomes: recovery, vegetative state or death. Sixty comatose patients (Glasgow scale 8(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 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)
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)