ROSELI SARAIVA MOREIRA BITTAR
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina
LIM/32 - Laboratório de Otorrinolaringologia, Hospital das Clínicas, Faculdade de Medicina
LIM/32 - Laboratório de Otorrinolaringologia, Hospital das Clínicas, Faculdade de Medicina
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- Dizziness profile and clinical features: a population based survey in São Paulo City, Brazil(2015) BITTAR, Roseli Saraiva Moreira; MEZZALIRA, Raquel; GRASEL, Signe Schuster; OITICICA, JeanneOBJECTIVE: This is a cross-sectional epidemiological survey designed to estimate the prevalence of dizziness among the adult population of the city of São Paulo, Brazil, and to describe the clinical features and level of discomfort. METHOD: This population based study was conductedin the city of São Paulo, Brazil, between April and October 2012. A total of 1,960 household interviews were completed. The following variables were assessed: gender, age, clinical characteristics of dizziness, and dizziness disability index. Chi-square test, Student's t-test,Tukey test and logistic regression were used for statistical analysis. RESULTS: The dizziness prevalence in São Paulo was 42%. Peaks of dizziness were observed in two age groups: 49% among the 46 to 55 year-old, and 44% among the elderly subjects(> 65 years-old). Vestibular vertigo was detected in 8.3% of patients, with a strong female preponderance (p < 0.001). Symptoms caused disability in 27% of the affected respondents and were more frequent among women (p < 0.001). These sought medical care more frequently (p < 0.001). The dizziness disability index was significantly higher (p = 0.0165) among subjects with a lower educational level. There was no correlation between dizziness discomfort and the type of job. CONCLUSION: The prevalence of dizziness in São Paulo, Brazil, was established at 42%. Among the symptomatic subjects, 67% reported interruption of daily activities, but only 46% of them sought medical attention.
- Vestibular recruitment: new application for an old concept(2022) BITTAR, Roseli Saraiva Moreira; MEZZALIRA, Raquel; RAMOS, Alice Carolina Mataruco; RISSO, Gabriel Henrique; REAL, Danilo Martin; GRASEL, Signe SchusterAbstract Introduction Vestibular recruitment is a sign of hyperexcitability of central vestibular neurons and may be characteristic of peripheral vestibular damage. Objective To define the post-caloric recruitment index and its ability to predict the stage of vestibular compensation and peripheral lesion. Methods First of all, we demonstrated that larger values in the cold post-caloric stimulation compared to warm stimulation were equivalent to vestibular recruitment observed during the sinusoidal harmonic acceleration test. In the next step, patients with vestibular complaints and asymptomatic controls were submitted to the caloric test. We calculated post-caloric recruitment index for the control group. Among the study group, we analyzed the relation between post-caloric recruitment and unilateral weakness as well as the types of vestibular diagnoses. Results Mean post-caloric recruitment was 17.06% and 33.37% among the control and study group, respectively. The ratio between post-caloric recruitment and unilateral weakness was 1.3 in the study group. Among recruiting subjects, no significant difference of unilateral weakness from the lesioned or healthy side was observed. We found no differences in vestibular diagnoses between recruiting and non-recruiting subjects. Conclusion Post-caloric recruitment index identified asymmetric vestibular tonus and central compensation. The normal value was established at 17.06%.