Head-shaking nystagmus predicts greater disability in unilateral peripheral XXXX .

@entity1 @entity345 @entity1897 @entity346 @entity1296 @entity394
OBJECTIVES: The objective of this study was to determine the association of the bedside test of @entity346 ( @entity346 ) with @entity1 ' self-perceived @entity1296 handicap as well as this test's sensitivity and specificity in unilateral peripheral @entity394 . STUDY DESIGN: A retrospective case-control study was performed. SETTING: The study was held at an academic, tertiary referral center. METHODS: Fifty-three adult @entity1 with unilateral peripheral hypofunction defined by the caloric test of the videonystagmography with documented bedside @entity346 and who had completed questionnaires of self-perceived @entity1296 handicap were included. The sensitivity and specificity of the bedside @entity346 in @entity1 and 10 healthy controls in diagnosing @entity394 defined by videonystagmographic caloric testing and by abnormal gain and symmetry of the vestibular-ocular reflex by rotary chair testing were determined. Scores of the screening test of the @entity1296 Handicap Index and Functional Level Scale questionnaires were taken. RESULTS: When using the caloric irrigation test as the reference standard for @entity394 , the sensitivity, specificity, and positive predictive value of the bedside @entity346 were 31%, 96%, and 97%, respectively. When comparing with results of rotational chair testing (vestibular-ocular reflex gain and symmetry), the sensitivity of the @entity346 test increases to 71%. @entity1 with positive bedside @entity346 had higher scores (greater self-perceived @entity1296 handicap) of the @entity1296 Handicap Index (P = .049) and higher (worse) scores of the Functional Level Scale (P = .0377) than those with negative bedside @entity346 (Wilcoxon rank test). CONCLUSIONS: Greater perceived handicap was correlated with a positive bedside @entity346 in @entity1 with unilateral peripheral @entity345 . The @entity346 has sufficient sensitivity to be used as screening test of uncompensated @entity345 in this series. However, a negative @entity346 alone does not rule out the diagnosis of @entity1897 .
