面瘫严重程度与预后有一定关系,通常面瘫程度轻的患者恢复得更快更好,而程度重的患者恢复相对较慢。为了实现统一客观的评价标准,可以使用House-Brackmann量表。它将面瘫程度从轻到重分为六级。
Ⅰ级:正常,各区面肌运动正常;
Ⅱ级:轻度功能异常,大体:仔细检查时有轻度的面肌无力,可有非常轻的联带运动。静止状态:面部对称,肌张力正常。运动:皱额正常,稍用力闭眼完全,口角轻度不对称;
Ⅲ级:中度功能异常,大体:明显的面肌无力,但无面部变形,可有联带运动,面肌挛缩或面肌痉挛。静止状态:面部对称,肌张力正常。运动:皱额减弱,用力后闭眼完全,口角用最大力后轻度不对称;
Ⅳ级:中重度功能异常,大体:明显的面肌无力和/或面部变形。静止状态:面部对称,肌张力正常。运动:皱额不能,闭眼不完全,口角用最大力后不对称;
Ⅴ级:重度功能异常,大体:仅有几乎不能察觉的面部运动。静止状态:面部不对称。运动:皱额不能,闭眼不完全,口角轻微运动;
Ⅵ级:完全麻痹,无运动。
House-Brackmann score
The House-Brackmann score is a score to grade the degree of nerve damage in a facial nerve palsy. The measurement is determined by measuring the upwards (superior) movement of the mid-portion of the top of the eyebrow, and the outwards (lateral) movement of the angle of the mouth. Each reference point scores 1 point for each 0.25cm movement, up to a maximum of 1cm. The scores are then added together, to give a number out of 8.
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