BARANYS SIGN Meaning and
Definition
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Barany's sign refers to a characteristic finding observed during the clinical examination of the vestibular system. It is named after Hungarian physiologist Robert Barany.
Barany's sign is a response seen in patients with a vestibular disorder, particularly in cases of labyrinthine or inner ear pathology. When a sudden change in body position or turning occurs, a person with healthy vestibular function will adjust their gaze to stabilize their vision and maintain balance. However, individuals with a pathology affecting the inner ear may display Barany's sign.
This sign manifests as nystagmus, an involuntary rhythmic movement of the eyes, alongside vertigo and dizziness. More specifically, when a person with an affected vestibular system is quickly turned to face the side of the lesion, their eyes will initially drift slowly towards the affected ear and then rapidly correct back to a neutral position. This abnormal eye movement occurs due to a disturbance in the vestibulo-ocular reflex, which is responsible for coordinating eye movements in response to changes in head position.
Barany's sign helps clinicians diagnose vestibular disorders and identify the side of the lesion. By observing the characteristic eye movements, physicians can determine the presence and location of the inner ear pathology, aiding in the formulation of an appropriate management plan for the patient.
Overall, Barany's sign is a clinical finding indicative of abnormal eye movements observed in individuals with a vestibular disorder, particularly those with inner ear pathology.
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In cases of ear disease, in which the vestibule is healthy, injection into the external auditory canal of water below the body temperature (65° F. or lower) will cause rotary nystagmus toward the opposite side; when the injected fluid is above the body temperature (106° F. or higher) the nystagmus will be toward the injected side; if the labyrinth is diseased there is no nystagmus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for BARANYS SIGN
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Etymology of BARANYS SIGN
The term "Barany's sign" is named after Robert Barany, an Austro-Hungarian otologist. He was born in 1876 and passed away in 1936. Barany contributed significantly to the field of otology and was awarded the Nobel Prize in Physiology or Medicine in 1914 for his research related to the physiology and pathophysiology of the vestibular apparatus.
"Barany's sign" specifically refers to the nystagmus (involuntary eye movement) that occurs when a person with a vestibular disorder is subjected to sudden rotation or positional changes. The term "sign" in medicine typically indicates an observable phenomenon or symptom that is used for diagnostic purposes.
Similar spelling words for BARANYS SIGN
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