亞急性前庭功能障礙者之姿態控制

姿態控制主要是靠前庭脊髓反射作用。前庭功能障礙患者常有眩暈症狀，隨著不同之疾病原因、嚴重程度、和中樞神經代償作用，以致每位患者之姿態控制表現不同。近來使用固定之測力板，收集受測者之重心移動資料，得到姿勢描計檢查之效果，間接反應出其前庭脊髓反射作用。本研究共收集31名亞急性前庭功能障礙患者，和24名年齡及性別分佈相近之正常人，利用測力板和前庭功能檢查，探討亞急性前庭功能障礙患者之姿態控制變化情形，以及靜態姿勢描計檢查與前庭失衡程度之關係。結果顯示，1）亞急性前庭功能障礙者，其重心移動軌跡雖仍大於正常人，但已有改善；2）靜態姿勢描計檢查中，重心移動軌跡此一參數，與前庭失衡程度有顯著相關，能反應出末梢前庭功能與姿態控制之關係；3）前庭失衡度≧10%時即可反應半規管衰弱之意義，此值可作為末梢前庭功能障礙之診斷參考。

關鍵字

前庭功能障礙；測力板；姿勢描計檢查

並列摘要

It is well recognized that patients with vestibular dysfunction usually suffer from vertiginous or dizzy sensation. The influence of vestibular function loss in postural control depends on the etiology and severity of disease, and the action of central compensation. Human upright postural control mainly relies upon the vestibulospinal reflex. The goals of this study were to evaluate the postural control in patients with subacute vestibular dysfunction, and the relationship between postural control and vestibular function loss. Thirty-one patients with subacute vestibular dysfunction and twenty-four normal subjctes were selected. The results showed as follows: 1)The sway length of center of pressure in patients at subacute stage is no longer significantly larger than that of normal subjects; it implies the patient’s postural control has improved after acute stage. 2) There is a significant correlation between the sway length and vestibular (labyrinthine) asymmetry. Thus, it is meaningful to use this parameter to reflect the degree of vestibular function loss clinically. 3) Peripheral vestibular dysfunction is supposed to exist if the vestibular asymmetry is more than 10%.

並列關鍵字

Vestibular dysfunction ； force platform ； posturography

國際替代計量

亞急性前庭功能障礙者之姿態控制

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