Quantitative Analysis Of The Characteristics Of Balance Dysfunction In Stroke Patients With Different Parts And Its Correlation With The Score Of Berg Scale

OBJECTIVE: To qualitatively and qualitatively study the characteristics of static balance dysfunction at different lesion sites in elderly patients follwing stroke,and to explore the correlation between the parameters of the instrument and the Berg score.Methods: Forty patients with senile stroke were enrolled in our hospital from September 2000 to February 2017,including 15 women and 25 males.According to the stroke site,patients were divided into three groups: subcortical group(20),cortical + subcortical group(10),and brain stem group(10).The balance function parameters such as fall index,overall stability,postural wobble spectrum and coordination synchronization were measured by Tetrax balance instrument.The balance score was measured by Berg balance scale,and different characteristics of balance dysfunction were compared.The normal elderly people enrolled as a control group in the same period,a total of 14 people,including 6 males and 8 females.The data were analyzed by SPSS statistical software.The differences of the parameters between the groups were compared by one-way ANOVA.The correlation between the parameters and the Berg score was evaluated by rank correlation analysis.Results: The fall index and the general stability were significantly higher in the stroke patients than in the normal control group(p <0.05).The intensity of the middle and high frequency bands in post-stroke patients was significantly higher than the normal control group(p <0.05)under the six posture circumstances of of eyes open on the pillow,eyes closed on the pillow,turn right eyes closed,turn left eyes closed,head back eyes closed,and head forth eyes closed;In the condition of normal eyes open,normal eyes closed,open eyes on the pillow,the eyes closed on the pillow,turn right eyes closed,turn left eyes closed,head back eyes closed,and head forth eyes closed,the high frequency swing intensity of the cortical group and the brain stem group was significantly higher than that of the normal control group(p <0.05).When people in the six states of normal eyes open,normal eyes closed,open eyes on the pillow,eyes closed on the pillow,head back eyes closed,head forth eyes closed,the subcortical group of high frequency and high frequency swing intensity are higher than the cortex,but there was no significant difference between them(P> 0.05)Besides,there was no significant difference in the middle and the high frequency swing intensity among these three groups(p> 0.05).Furthermore,correlation analysis demonstrated that the middle and high frequency swing intensity in postural wobble spectrum of Tetrax instrument was significantly correlate with the Berg scale score(p <0.05).The middle and high frequency swing intensity in the postural swing frequency spectrum was correlated with the Berg scale score,but there was no significant differences(p> 0.05).There was no significant correlation between the fall index,the general stability and the postural swing frequency spectrum,the low and high frequency swing intensity,the high and the Berg scale score.Conclusion: The static balance function of elderly patients suffered from stroke was significantly reduced than that of normal age,and the proprioception was greatly impaired.Compared to patients with cortical and subcortical stroke,the central vestibular dysfunction was more pronounced in patients with cortical and brainstem stroke.Tetrax instrument can quantitatively and qualitatively assess postganglionic balance dysfunction,which provide a new method for balance function determination.