The Hyperactive Vestibular Response

Torok, Nicholas

doi:10.3109/00016487009181871

Cited by 28 publications

(22 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bilateral hyperactive caloric response, observed in 4/33 (12%) of the abnormal tests, has a limited value as a topodiagnosis, due to the fact that it may correlate with mood variation and therefore cause subjectivity in the answer pattern (28).…”

Section: Discussionmentioning

confidence: 99%

Presbivertigem como causa de tontura no idoso

Felipe

Cunha

et al. 2008

Pró-Fono R. Atual. Cient.

View full text Add to dashboard Cite

INTRODUÇÃO: tontura é queixa freqüente na população geriátrica e interfere na qualidade de vida desses indivíduos. OBJETIVO: descrever as causas de tontura, correlacionar sintomas e alterações na prova calórica e verificar o impacto da presbivertigem como fator primário de tontura em população de idosos. MÉTODO: revisão do prontuário de 132 pacientes com mais de 60 anos e distúrbio do equilíbrio corporal, atendidos no ambulatório de Otoneurologia do Hospital das Clínicas da UFMG, no período de 1998 a 2007. As variáveis analisadas foram: dados epidemiológicos, história clínica, doenças associadas e resultado da prova calórica. Casos de vertigem de posição e suspeita de lesão central foram excluídos da análise. RESULTADOS: A amostra constou de 120 pacientes. A idade média foi de 70 anos, sendo 87 (71%) mulheres. Dentre os tipos de tontura, vertigem de alguns minutos de duração e freqüência diária foi mais freqüente. Em relação ao resultado da prova calórica, exame normal foi observado em 73% e, dentre os resultados alterados, hiporreflexia bilateral (presbivertigem) foi observada em 8%. Correlacionando-se com o tipo de tontura, hiporreflexia bilateral associou-se com instabilidade postural (p = 0,006; IC = 2 - 419). CONCLUSÃO: tontura no idoso tem causa multifatorial. Perda da função vestibular periférica pode estar relacionada à presbivertigem e deve ser considerada em pessoas idosas com desequilíbrio. Distúrbios metabólicos, psíquicos, disautonômicos, ortopédicos, visuais e de propriocepção podem ser causa de tontura em idosos com exame vestibular normal.

show abstract

Section: Discussionmentioning

confidence: 99%

Presbivertigem como causa de tontura no idoso

Felipe

Cunha

et al. 2008

Pró-Fono R. Atual. Cient.

View full text Add to dashboard Cite

show abstract

“…25 In peripheral vestibular disease, hyperreflexia may be seen in the contralateral labyrinth to that with a deficient response. 22,26 Bilateral hyperreflexia may be observed in central vestibular diseases. In a state of normalcy, the cerebellar flocculus inhibits vestibular nucleus neurons, thus inhibiting the VOR.…”

Section: Hyperreflexiamentioning

confidence: 99%

“…27,28 Bilateral hyperreflexia of no apparent cause -such as in anxiety or upon ingesting psychoactive drugs -added to fewer neurovegetative symptoms than expected for the observed hyperreflexia, may indicate central injury. 26,27,28 Otological alterations unrelated to the peripheral or central labyrinthic lesion might generate hyperreflexia. The most common are those that favor transference of the caloric stimulus to the inner ear, such as mastoidectomy or tympanic membrane perforation/atrophy/retraction.…”

Section: Hyperreflexiamentioning

confidence: 99%

“…Anxiety of patients is a further cause of hyperreflexia. 26,29 In fact, fear of caloric testing appears to be one of the most common causes of hyperreflexia.…”

Section: Hyperreflexiamentioning

confidence: 99%

“…26,30 Anxiety about an unknown test is the commonly accepted explanation. Thus, orientation about the steps in caloric testing and the possibility of vertigo are important for patients.…”

Section: Anxiety and Nervousnessmentioning

confidence: 99%

See 2 more Smart Citations

Interpretação e utilidade da prova calórica

Gonçalves¹,

Felipe²,

Lima³

2008

Rev. Bras. Otorrinolaringol.

View full text Add to dashboard Cite

Cal oric testing is an otoneurologic evaluation of the status of the vestibular-ocular reflex; it allows an evaluation of each labyrinth separately. The main aspects on the use and interpretation of caloric testing are reviewed. Method: A systematic review of papers published in the past one hundred years on caloric testing was undertaken. The inclusion criteria were: cross-sectional, longitudinal, original articles, reviews and meta-analyses. Reviews of patient charts, case reports and editorials were excluded. The key-words were: caloric testing, nystagmus, vestibular system, directional preponderance, labyrinth predominance, monothermal caloric test, ice water caloric testing, Bell´s phenomenon. The databases were: COCHRAINE, MEDLINE, LILACS, CAPES. Results: Ninety-three of 818 abstracts fulfilled the inclusion criteria. After reading these articles, 55 were selected for this study. These papers discussed the basics of caloric testing, the types of stimulation, the interpretation of results, variables, artifacts, and the monothermal and ice water caloric test. Final comments: Caloric testing reference values may vary according to each unit; the the cutoff point is defined based on local studies. Attention to the technique is essential to maximize test sensitivity.

show abstract

Standard Evaluation of the Reactive Nystagmus

Torok¹

1972

Archives of Otolaryngology - Head and Neck Surgery

Self Cite

View full text Add to dashboard Cite

The Hyperactive Vestibular Response

Cited by 28 publications

References 6 publications

Presbivertigem como causa de tontura no idoso

Presbivertigem como causa de tontura no idoso

Interpretação e utilidade da prova calórica

Standard Evaluation of the Reactive Nystagmus

Contact Info

Product

Resources

About