Absent vestibulo-ocular reflexes and acute supratentorial lesions

Rosenberg, Michael L.; Sharpe, James; Hoyt, William F.

doi:10.1136/jnnp.38.1.6

Cited by 14 publications

(4 citation statements)

References 20 publications

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“…Tests of brain stem function, therefore, are more appropriate to the diagnosis of brain death than those of cortical function and there are numerous reports in the literature of prolonged survival of patients with isoelectric EEGs (Crow and Winter 1969, Bennett et al 1971, Bricola et al 1971 although the likelihood of such survival is very low when drug intoxications are excluded (Silverman et al 1969). Conversely, two cases are reported in the literature of patients with severe cerebral lesions who survived transient loss of the vestibulo-ocular reflex (Rosenberg et al 1975) and indeed we noted in one of our control patients transient absence of response to caloric testing.…”

Section: Discussionsupporting

confidence: 52%

The Vestibulo-Ocular (Caloric) Reflex in the Diagnosis of Cerebral Death

Hicks

Torda

1979

Anaesth Intensive Care

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Correlation between vestibulo-ocular (caloric) reflex and the electroencephalogram was examined in 25 apparently brain-dead and 17 severely brain-injured patients. Among the apparently cerebrally dead, 3 patients still had some EEG activity and in 2, there was some response to caloric testing. In the control group of patients some EEG activity was present in all, and the caloric response was absent in 1. It is concluded that absence of caloric response has similar power to the electroencephalogram in confirming cerebral death. The diagnosis, however, must be made on the total information available, including history and examination of the patient. The policy of the Intensive Care Unit of Prince Henry Hospital in this regard is outlined.

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Section: Discussionsupporting

confidence: 52%

The Vestibulo-Ocular (Caloric) Reflex in the Diagnosis of Cerebral Death

Hicks

Torda

1979

Anaesth Intensive Care

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“… 32 Causes of persistent hyporreflexia may be associated with ototoxicity, in which the caloric response ranges from hyporreflexia to arreflexia according to time and exposure dose. 33 , 34 Other causes of hyporreflexia are systemic infections, such as congenital or acquired syphilis, 35 central nervous system diseases, such as supratentorial tumors, 36 benign intracranial hypertension, 37 and Friedreich's ataxia, a progressive hereditary neurodegenerative disease affecting mostly the spinal cord and the cervicomedullar junction. 38 Metabolic diseases that may cause hyporreflexia include Wernicke-Korsakoff's encephalopathy, which is associated with thiamine deficiency in chronic alcoholism.…”

Section: Discussionmentioning

confidence: 99%

Interpretation and use of caloric testing

Gonçalves¹,

Felipe²,

Lima³

2008

Brazilian Journal of Otorhinolaryngology

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“…32 Causes of persistent hyporreflexia may be associated with ototoxicity, in which the caloric response ranges from hyporreflexia to arreflexia according to time and exposure dose. 33,34 Other causes of hyporreflexia are systemic infections, such as congenital or acquired syphilis, 35 central nervous system diseases, such as supratentorial tumors, 36 benign intracranial hypertension, 37 and Friedreich's ataxia, a progressive hereditary neurodegenerative disease affecting mostly the spinal cord and the cervicomedullar junction. 38 Metabolic diseases that may cause hyporreflexia include Wernicke-Korsakoff's encephalopathy, which is associated with thiamine deficiency in chronic alcoholism.…”

Section: Hyporreflexiamentioning

confidence: 99%

Interpretação e utilidade da prova calórica

Gonçalves¹,

Felipe²,

Lima³

2008

Rev. Bras. Otorrinolaringol.

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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.

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Absent vestibulo-ocular reflexes and acute supratentorial lesions

Cited by 14 publications

References 20 publications

The Vestibulo-Ocular (Caloric) Reflex in the Diagnosis of Cerebral Death

The Vestibulo-Ocular (Caloric) Reflex in the Diagnosis of Cerebral Death

Interpretation and use of caloric testing

Interpretação e utilidade da prova calórica

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