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Relationship of Vertigo and Postural Instability in Patients With Vestibular Schwannoma

 Gi-Sung Nam  ;  Chan Min Jung  ;  Ji Hyung Kim  ;  Eun Jin Son 
 Clinical and Experimental Otorhinolaryngology, Vol.11(2) : 102-108, 2018 
Journal Title
 Clinical and Experimental Otorhinolaryngology 
Issue Date
Acoustic Neuroma ; Postural Balance ; Posturography ; Vertigo
OBJECTIVES: Growth of vestibular schwannomas (VS) causes progressive vestibular symptoms and postural instability. Since the tumor grows slowly, compensation of decaying vestibular input may decrease subjective symptoms of dizziness. This study aims to estimate the relationship of subjective vestibular symptoms and objective postural instability in patients with VS. METHODS: A retrospective review of 18 patients newly diagnosed with VS and with subjective vertigo symptoms was performed. The results of vestibular function tests including the sensory organization test (SOT) using computerized dynamic posturography, caloric test, and self-report measures of subjective dizziness handicap (Dizziness Handicap Inventory) and visual analogue scale were compared according to the onset of vertigo symptoms. RESULTS: In VS patients, SOT showed decreased equilibrium score for all vestibular function related conditions, condition (C) 5 and 6, and composite (COMP) score. COMP scores were not correlated with visual analogue scale or Dizziness Handicap Inventory scores. Acute onset group included six patients and insidious onset group, 12 patients. Equilibrium scores for C5 and C6, and COMP scores were lower for insidious onset group, but the difference was not statistically significant. CONCLUSION: Our findings confirmed postural instability is prevalent in VS patients. SOT parameters did not differ significantly between acute onset and insidious onset groups, but increased tumor size and canal weakness were noted in the insidious onset group. Clinicians should consider that postural instability is likely present even in patients who do not complain of acute vertigo, and appropriate counseling should be discussed with the patients.
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1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ji Hyung(김지형)
Nam, Gi-Sung(남기성)
Son, Eun Jin(손은진)
Jung, Chan Min(정찬민) ORCID logo https://orcid.org/0000-0002-1445-2564
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