PDF(Pubmed)
Abstract：
Aim: The research aimed to establish reference values of visual evoked potentials among school-aged children after brain injury. Methods: Eighteen patients with persisting visual symptoms after brain injury have been examined. A pattern-VEP test has been used during the examination. Results: The prolongation of the N2 wave in 55,6%-66,6%, P wave in 55,7%-66,7%, and N3 wave in 16,7%-22,2% was determined in the research group. Likewise, the decrease in the amplitude of the P wave was determined in the case of 16,7%-33,3%. According to the topography, we concluded that the prechiasmatic alteration was predominantly determined as bilateral in the optic pathways, with emphasis equally on the right and left. Conclusions: VEP evaluation remains one of the most credible methods of examination. In the case of moderate or severe traumatic optic neuropathy, it allows the detection of damage to the optic pathways before the appearance of organic changes that are often irreversible. The possibility of early detection of such modifications could justify the initiation of a dosed stimulatory treatment, to avoid damage to the optic pathways that would induce secondary optic atrophy. Abbreviations: VEP = visual evoked potentials, MRI = magnetic resonance imaging.
摘要：
目的:建立学龄儿童脑损伤后视觉诱发电位的参考值。方法：对18例颅脑损伤后视觉症状持续存在的患者进行检查。在检查期间使用了模式VEP测试。结果:N2波延长55,6%-66,6%,P波在55,7%-66,7%，在研究组中确定了N3波的16,7％-22,2％。同样，在16,7％-33,3％的情况下，确定了P波振幅的降低。根据地形,我们得出的结论是，前交叉改变主要是在视路中确定为双侧，同样强调左右。结论：VEP评估仍然是最可靠的检查方法之一。在中度或重度外伤性视神经病变的情况下，它允许在出现通常不可逆的有机变化之前检测到光学通路的损坏。早期发现这种改变的可能性可以证明开始剂量刺激治疗是合理的。以避免导致继发性视神经萎缩的视神经通路受损。缩写：VEP=视觉诱发电位，MRI=磁共振成像。
