Klinika Neurochirurgii, Wydziat Lekarski, Warszawski Uniwersytet Medyczny.
Neurol Neurochir Pol. 2012 Nov-Dec;46(6):553-9. doi: 10.5114/ninp.2012.32177.
This study aimed to quantitatively evaluate balance disturbances by means of static posturography in patients with enlargement of the ventricular system (Evans ratio > 0.3).
Fifty-four patients were diagnosed and treated in our Department of Neurosurgery. Thirty-six of them were qualified as patients with brain atrophy and 18 others were identified as patients with normal pressure hydrocephalus (NPH). Average sway radius and developed area of the posturogram were evaluated with eyes open and closed. These parameters constituted a base to calculate vision indices related to radius and area as a result of division of the difference of a given parameter (radius or area) measured with eyes closed and open by its corresponding sum.
The sway range was significantly greater in patients with NPH in comparison to the control group. In NPH, there were no differences of sways observed with eyes open or closed - the vision indices were not statistically different from zero (vision index related to radius: -6.1 ± 18.9%, vision index related to area: -5.1 ± 34.7%). This may indicate no participation of sight in postural stability control. Values of the vision index related to radius (9.3 ± 19.4%) and to area (22.1 ± 28.2%) in the atrophy group significantly differed from zero, which indicated the participation of sight in postural stability control.
Introduction of a new measure called the 'vision index' seems to be a promising clinical practice method of differentiation of hydrocephalus and brain atrophy.
本研究旨在通过静态姿势描记术定量评估脑室系统扩大（Evans 比值>0.3）患者的平衡障碍。
在我们的神经外科，共诊断和治疗了 54 名患者。其中 36 名被确定为脑萎缩患者，18 名被确定为正常压力脑积水（NPH）患者。睁眼和闭眼时评估姿势图的平均摆动半径和发展面积。这些参数构成了计算与半径和面积相关的视觉指数的基础，其方法是将闭眼和睁眼时测量的特定参数（半径或面积）的差异除以相应的总和。
与对照组相比，NPH 患者的摆动范围明显更大。在 NPH 中，睁眼或闭眼时的摆动没有差异——视觉指数与零没有统计学差异（与半径相关的视觉指数：-6.1 ± 18.9%，与面积相关的视觉指数：-5.1 ± 34.7%）。这可能表明视觉没有参与姿势稳定性控制。萎缩组与半径（9.3 ± 19.4%）和面积（22.1 ± 28.2%）相关的视觉指数值与零显著不同，这表明视觉参与了姿势稳定性控制。
引入一种称为“视觉指数”的新测量方法似乎是区分脑积水和脑萎缩的有前途的临床实践方法。
