Thesis (M. Aud.)--University of Canterbury, 2007. / "February 2007." Typescript (photocopy). Includes bibliographical references (p. 106-109). Also available via the World Wide Web.

Thése--Universit́e de Paris. / "Bibliographie": p. 1 l. at end.

Benign paroxysmal positional vertigo (BPPV) is a condition characterized by brief spinning episodes that occur with a rapid change in head position. Although considered benign, BPPV can have many personal, social, health, and financial implications. Yet, providers in a variety of settings are frequently mismanaging the condition leading to incomplete resolution of symptoms, decreased quality of life, reduced productivity, and increased healthcare spending. This study sought to better understand why providers fail to follow current evidence-based BPPV guidelines and the impact BPPV-specific education could have on improving their practices. Questionnaires assessing BPPV-specific knowledge as well as inquiring about provider barriers to following guidelines were distributed to 11 providers in a rural Colorado mountain town. A 45-minute education session was then presented to providers in order to update them on current recommendations. Following the education, similar questionnaires reassessing provider knowledge of BPPV guidelines were disseminated. Results showed an improvement in provider knowledge as evidenced by an increase in the percentage of correct response scores following the education session compared to pre-education. Additionally, providers identified difficulty in interpreting nystagmus patterns as well and remembering how to perform the various maneuvers as major barriers to guidelines adherence. Future BPPV education should focus on these two barriers to ensure better guidelines adherence. In order to evaluate long-term practice changes following the intervention, a 16-month retrospective chart analysis was performed in a small rural emergency department where three of the participating providers from the education session worked. Results from the chart analysis were inconclusive due to a scarcity of patient encounters during the post-intervention period. Future studies should be performed with a larger participation pool and longer analysis period to better evaluate the effectiveness of BPPV-specific education on improving provider practices. The ultimate goals of providing BPPV education are to promote a quicker resolution of patient’s symptoms, improve their quality of life, reduce unnecessary healthcare spending, while still allowing for appropriate provider compensation.

Thesis (doctoral)--University of Lund.

Thesis (doctoral)--University of Lund.

Diploma thesis "Effect of cognitive task in postural sway of patiens with phobic postural vertigo" in its theoretical part discusses physiology of balance system, its disorders and summarizes knowledge of phobic postural vertigo. In experimental section we analyzed postural stability of 5 patients with phobic postural vertigo, 5 patients with structural lesion of vestibular system and 5 healthy subjects with posturography during normal stence and while performing cognitive tasks - "Contact test", Verbal Fluency task and modified Stroop test. The goal of this study was to find out whether postural stability of subjects differs while performing cognitive tasks in comparison with normal stance. Powered by TCPDF (www.tcpdf.org)

No description available.

A vertigem de posicionamento paroxística benigna (VPPB) é a síndrome mais freqüente em ambulatório especializado. Caracteriza-se por ataques de vertigem de curta duração e é diagnosticada através de nistagmo típico desencadeado pela manobra de Dix-Hallpike. Do ponto de vista fisiopatológico a VPPB é explicada pela teoria da canalolitíase, um processo no qual partículas flutuam livremente pela endolinfa do canal semicircular. Em 1980 Brandt e Daroff foram os primeiros a sugerir que a VPPB pudesse ser tratada com exercícios por ser um problema mecânico do labirinto. Posteriormente Semont e col., em 1988 e Epley em 1992 propuseram outras manobras com boa eficácia após duas sessões de tratamento. Recentemente foi proposta a manobra de Epley modificada para tratamento domiciliar. Os objetivos deste estudo foram: (1) avaliar a viabilidade do tratamento domiciliar da VPPB; (2) comparar a eficácia da manobra de Semont, de Epley modificada e de Brandt- Daroff; (3) avaliar a eficácia destas manobras após duas e quatro semanas de tratamento domiciliar; (4) analisar o efeito de uma segunda manobra no caso de falha da primeira; (5) avaliar se ajuda de familiares e acurácia na realização das manobras interfere nos resultados; e (6) determinar possíveis fatores prognósticos da VPPB. Sessenta pacientes (38 mulheres) com idade de 26 a 87 anos (média 63.5) foram distribuídos aleatoriamente em três opções terapêuticas - manobra de Brandt-Daroff, de Semont e de Epley modificada. Todos os pacientes apresentavam nistagmo típico de VPPB do canal posterior no teste de posicionamento. Dez pacientes não compareceram aos retornos. Os 50 pacientes restantes ficaram distribuídos da seguinte maneira: manobra de Brandt-Daroff, n=17, manobra de Semont, n=18; manobra de Epley modificada, n=15. Cada exercício deveria ser realizada em três sessões diárias, que consistiam de 10 repetições para a manobra de Brandt-Daroff , e três para a de Semont e Epley modificada. Na primeira consulta a manobra selecionada era realizada com o auxílio do examinador e em seguida o paciente executava o exercício sem sua ajuda. As reavaliações foram feitas com intervalos de uma ou duas semanas. Foi considerada resolução total apenas naqueles pacientes sem vertigem e sem nistagmo no teste de posicionamento. Nos retornos o paciente demonstrava a manobra para determinar a acurácia na sua realização. Após sete dias os pacientes com resolução total eram instruídos a interromper a manobra, enquanto aqueles sem remissão mantinham o tratamento por mais sete dias. Após 14 dias de tratamento domiciliar houve resolução total em 29% dos pacientes realizaram a manobra de Brandt-Daroff, em 72% dos que fizeram a de Semont e em 80% daqueles que fizeram a de Epley modificada (p=0,019, log rank test). Vinte pacientes permaneceram sintomáticos após 14 dias. Destes, 11 foram instruídos a manter o tratamento inicial por mais duas semanas (grupo 1), oito receberam a orientação de realizar uma segunda manobra pelo mesmo período (grupo 2), e uma paciente não compareceu aos retornos. Cinco pacientes (45%) do grupo 1 e cinco (62%) do grupo 2 tiveram resolução total após 14 dias. As conclusões deste estudo foram as seguintes: (1) o tratamento domiciliar da VPPB é possível e leva a bons resultados; (2) as manobras de Semont e de Epley modificada são semelhantes entre si e melhores que a de Brandt-Daroff; (3) metade dos pacientes que permaneceram sintomáticos após duas semanas se beneficiaram de um período adicional de duas semanas de tratamento; (4) o efeito obtido com a manutenção da manobra inicial por mais duas semanas foi semelhante àquele obtido com a realização de uma segunda manobra pelo mesmo período; (5) pequenos erros e ajuda de familiares não interferiram nos resultados e (6) idade, gênero, etiologia e duração dos sintomas antes do inicio do tratamento não modificaram o prognóstico da VPPB / Benign paroxysmal positioning vertigo (BPPV) is the most common syndrome in a dizziness unit. It is characterized by brief attacks of vertigo and can be easily diagnosed with the Dix-Hallpike test on the basis of its typical nystagmus. Canalolithiasis, a process in which free particles float freely within the endolymph of the semicircular canal, is the underlying mechanism of BPPV. In 1980 Brandt and Daroff, were the first to suggest that BPPV could be treated by simple exercises because of its mechanical pathogenesis. Later Semont and colleages in 1988 and Epley in 1992 proposed different maneuvers, which reportedly yielded good results after two treatment sessions. Recently a modified Epley maneuver was proposed for use as self-treatment of BPPV. The aims of our study were: (1) to analyze the efficacy of self treatment (2) to compare the efficacy of Semont maneuver, modified Epley maneuver, and Brandt-Daroff exercises during self-treatment of posterior BPPV; (3) to evaluate the efficacy of these maneuvers after two and four weeks of self-treatment; (4) to analyze the effect of a second maneuver if the first one failed; (5) to evaluate if assistance of relatives or inaccuracies in performing the maneuvers may interfere in the results; and (6) to determine possible prognostic factors of BPPV . Sixty patients (38 women) aged 26 to 87 years (mean 63.5) were randomly assigned for one of the three treatment options: Semont maneuver, modified Epley maneuver, and Brandt- Daroff exercises. All patients showed a typical nystagmus of posterior canal-BPPV during the positional test. Ten patients were lost to follow-up and therefore not included in the analysis. The remaining 50 patients were distributed among the treatment options as follows: Brandt-Daroff exercises, n=17; Semont maneuver, n=18; modified Epley maneuver, n=15. Each treatment option had to be performed in three daily sessions consisting of 10 repetitions for Brandt-Daroff exercises and 3 repetitions for Semont maneuver and modified Epley maneuver. On the first visit the assigned maneuver was done with the examiner assistance and afterwards it was performed by the patient alone. Clinical revaluation occurred on weekly intervals. BPPV was considered resolved only in those patients who had neither vertigo nor nystagmus on the positional testing. Patients were asked to demonstrate the maneuver, so that their accuracy could be determined. After 7 days those patients in whom BPPV had resolved were instructed to interrupt the maneuver, whereas those without remission were required to perform the same initial maneuver for another 7 days. After 14 days of self-treatment the remission rates were 29% for those performing BDE, 72% for SM and 80% for MEM (p=0,019, log rank test). Twenty patients were still symptomatic after 14 days, 11 of these patients were instructed to perform the same initial procedure (group 1), 8 were instructed to execute another maneuver (group 2), and 1 was missed to follow-up (Table 1). Five (45%) patients in group 1 and five (62%) in group 2 were asymptomatic after another 14 days of treatment (p=0,93, log rank test;). We conclude from our data that (1) self-treatment of BPPV has a good efficacy ; (2) SM and MEM are both equally efficient and better than BDE; (3) half of all patients who remain symptomatic after a 2-week treatment, may benefit from a 4-week self-treatment; (4) equivalent results are achieved by performing one or two maneuvers during a 4-week self-treatment; (5) accurate performance and assistance of relatives did not improve the outcome; and (6) age, gender, etiology, duration of symptoms before treatment were not predictive of outcome

Professional research project (Au.D.)--University of South Florida, 2002. / Title from PDF of title page. / Document formatted into pages; contains 24 pages. / Includes bibliographical references. / Text (Electronic thesis) in PDF format. / ABSTRACT: The purpose of this study was to examine the prevalence of nystagmus found in healthy individuals during the positional testing subtest of the standard vestibular test battery. Positional testing involves moving the patient's head, and sometimes the entire body, into a variety of positions while observing eye movement. The hypothesis of the current study was that a relatively low percentage of participants would display nystagmus during positional testing used routinely in clinical diagnostic procedures. The findings were then compared to those of an earlier study in which 82% of normal, healthy individuals were reported to exhibit nystagmus during this testing. Twenty-five participants were selected that had no known otologic disease and who reported normal hearing sensitivity. / ABSTRACT: In addition, the participants affirmed they had not consumed any alcohol or taken any medications that are known to affect nystagmus. They were then observed in nine different positions. Forty-eight percent of the participants experienced nystagmus in at least one position. Although this percentage was considerably lower than that reported in the earlier study, methodological differences appear to account for the discrepancy. Specifically, the criterion for determining the presence/absence of nystagmus potentially explains the difference in full. / System requirements: World Wide Web browser and PDF reader. / Mode of access: World Wide Web.

A vertigem de posicionamento paroxística benigna (VPPB) é a síndrome mais freqüente em ambulatório especializado. Caracteriza-se por ataques de vertigem de curta duração e é diagnosticada através de nistagmo típico desencadeado pela manobra de Dix-Hallpike. Do ponto de vista fisiopatológico a VPPB é explicada pela teoria da canalolitíase, um processo no qual partículas flutuam livremente pela endolinfa do canal semicircular. Em 1980 Brandt e Daroff foram os primeiros a sugerir que a VPPB pudesse ser tratada com exercícios por ser um problema mecânico do labirinto. Posteriormente Semont e col., em 1988 e Epley em 1992 propuseram outras manobras com boa eficácia após duas sessões de tratamento. Recentemente foi proposta a manobra de Epley modificada para tratamento domiciliar. Os objetivos deste estudo foram: (1) avaliar a viabilidade do tratamento domiciliar da VPPB; (2) comparar a eficácia da manobra de Semont, de Epley modificada e de Brandt- Daroff; (3) avaliar a eficácia destas manobras após duas e quatro semanas de tratamento domiciliar; (4) analisar o efeito de uma segunda manobra no caso de falha da primeira; (5) avaliar se ajuda de familiares e acurácia na realização das manobras interfere nos resultados; e (6) determinar possíveis fatores prognósticos da VPPB. Sessenta pacientes (38 mulheres) com idade de 26 a 87 anos (média 63.5) foram distribuídos aleatoriamente em três opções terapêuticas - manobra de Brandt-Daroff, de Semont e de Epley modificada. Todos os pacientes apresentavam nistagmo típico de VPPB do canal posterior no teste de posicionamento. Dez pacientes não compareceram aos retornos. Os 50 pacientes restantes ficaram distribuídos da seguinte maneira: manobra de Brandt-Daroff, n=17, manobra de Semont, n=18; manobra de Epley modificada, n=15. Cada exercício deveria ser realizada em três sessões diárias, que consistiam de 10 repetições para a manobra de Brandt-Daroff , e três para a de Semont e Epley modificada. Na primeira consulta a manobra selecionada era realizada com o auxílio do examinador e em seguida o paciente executava o exercício sem sua ajuda. As reavaliações foram feitas com intervalos de uma ou duas semanas. Foi considerada resolução total apenas naqueles pacientes sem vertigem e sem nistagmo no teste de posicionamento. Nos retornos o paciente demonstrava a manobra para determinar a acurácia na sua realização. Após sete dias os pacientes com resolução total eram instruídos a interromper a manobra, enquanto aqueles sem remissão mantinham o tratamento por mais sete dias. Após 14 dias de tratamento domiciliar houve resolução total em 29% dos pacientes realizaram a manobra de Brandt-Daroff, em 72% dos que fizeram a de Semont e em 80% daqueles que fizeram a de Epley modificada (p=0,019, log rank test). Vinte pacientes permaneceram sintomáticos após 14 dias. Destes, 11 foram instruídos a manter o tratamento inicial por mais duas semanas (grupo 1), oito receberam a orientação de realizar uma segunda manobra pelo mesmo período (grupo 2), e uma paciente não compareceu aos retornos. Cinco pacientes (45%) do grupo 1 e cinco (62%) do grupo 2 tiveram resolução total após 14 dias. As conclusões deste estudo foram as seguintes: (1) o tratamento domiciliar da VPPB é possível e leva a bons resultados; (2) as manobras de Semont e de Epley modificada são semelhantes entre si e melhores que a de Brandt-Daroff; (3) metade dos pacientes que permaneceram sintomáticos após duas semanas se beneficiaram de um período adicional de duas semanas de tratamento; (4) o efeito obtido com a manutenção da manobra inicial por mais duas semanas foi semelhante àquele obtido com a realização de uma segunda manobra pelo mesmo período; (5) pequenos erros e ajuda de familiares não interferiram nos resultados e (6) idade, gênero, etiologia e duração dos sintomas antes do inicio do tratamento não modificaram o prognóstico da VPPB / Benign paroxysmal positioning vertigo (BPPV) is the most common syndrome in a dizziness unit. It is characterized by brief attacks of vertigo and can be easily diagnosed with the Dix-Hallpike test on the basis of its typical nystagmus. Canalolithiasis, a process in which free particles float freely within the endolymph of the semicircular canal, is the underlying mechanism of BPPV. In 1980 Brandt and Daroff, were the first to suggest that BPPV could be treated by simple exercises because of its mechanical pathogenesis. Later Semont and colleages in 1988 and Epley in 1992 proposed different maneuvers, which reportedly yielded good results after two treatment sessions. Recently a modified Epley maneuver was proposed for use as self-treatment of BPPV. The aims of our study were: (1) to analyze the efficacy of self treatment (2) to compare the efficacy of Semont maneuver, modified Epley maneuver, and Brandt-Daroff exercises during self-treatment of posterior BPPV; (3) to evaluate the efficacy of these maneuvers after two and four weeks of self-treatment; (4) to analyze the effect of a second maneuver if the first one failed; (5) to evaluate if assistance of relatives or inaccuracies in performing the maneuvers may interfere in the results; and (6) to determine possible prognostic factors of BPPV . Sixty patients (38 women) aged 26 to 87 years (mean 63.5) were randomly assigned for one of the three treatment options: Semont maneuver, modified Epley maneuver, and Brandt- Daroff exercises. All patients showed a typical nystagmus of posterior canal-BPPV during the positional test. Ten patients were lost to follow-up and therefore not included in the analysis. The remaining 50 patients were distributed among the treatment options as follows: Brandt-Daroff exercises, n=17; Semont maneuver, n=18; modified Epley maneuver, n=15. Each treatment option had to be performed in three daily sessions consisting of 10 repetitions for Brandt-Daroff exercises and 3 repetitions for Semont maneuver and modified Epley maneuver. On the first visit the assigned maneuver was done with the examiner assistance and afterwards it was performed by the patient alone. Clinical revaluation occurred on weekly intervals. BPPV was considered resolved only in those patients who had neither vertigo nor nystagmus on the positional testing. Patients were asked to demonstrate the maneuver, so that their accuracy could be determined. After 7 days those patients in whom BPPV had resolved were instructed to interrupt the maneuver, whereas those without remission were required to perform the same initial maneuver for another 7 days. After 14 days of self-treatment the remission rates were 29% for those performing BDE, 72% for SM and 80% for MEM (p=0,019, log rank test). Twenty patients were still symptomatic after 14 days, 11 of these patients were instructed to perform the same initial procedure (group 1), 8 were instructed to execute another maneuver (group 2), and 1 was missed to follow-up (Table 1). Five (45%) patients in group 1 and five (62%) in group 2 were asymptomatic after another 14 days of treatment (p=0,93, log rank test;). We conclude from our data that (1) self-treatment of BPPV has a good efficacy ; (2) SM and MEM are both equally efficient and better than BDE; (3) half of all patients who remain symptomatic after a 2-week treatment, may benefit from a 4-week self-treatment; (4) equivalent results are achieved by performing one or two maneuvers during a 4-week self-treatment; (5) accurate performance and assistance of relatives did not improve the outcome; and (6) age, gender, etiology, duration of symptoms before treatment were not predictive of outcome