Research ArticleOriginal Article
Open Access

Visual evoked potentials follow-up in idiopathic intracranial hypertension

Mehmet Hamamci and Temel Tombul
Neurosciences Journal July 2019, 24 (3) 185-191; DOI: https://doi.org/10.17712/nsj.2019.3.20190004

Article Figures & Data

Figures

  • Figure 1
    Figure 1

    Visual evoked potential (VEP) images of a patient who showed improvement in VEP values. Visual evoked potential images and values of a patient 3 hours before lumbar puncture (A). Visual evoked potential images and values of the same patients after one month of treatment (B). [X-axis: latency (ms), Y-axis: amplitude (µV)].

Tables

  • Table 1

    Demographic and clinical features of patients with idiopathic intracranial hypertension.

    Demographic variablesn (%)
    Age (mean±SD)
     Male36.20±12.235
     Female38.11±11.872
    Gender
     Male27 (84)
     Female5 (16)
    Obesity
     Yes20 (63)
     No12 (27)
    Papilledema
     Yes28 (88)
     One-sided1 (3)
     No3 (9)
    Visual field
     Normal7 (22)
     Pathological25 (78)
    Visual acuity
     Normal24 (75)
     Decreased8 (25)
    CSF pressure (mm-water) (mean±SD)386.88±82.753
    Presenting complaint
     Headache32 (100)
     Temporary loss of vision21 (66)
     Photopsy10 (31)
     Diplopia9 (28)
     Eye pain9 (28)
     Tinnitus8 (25)
     Vertigo5 (16)
    Time from the onset of the complaint to diagnosis (median)8.50 (min: 3, max: 547)
  • Table 2

    Comparison of the initial VEP values of IIH patients to the VEP values of the healthy control group.

    VariablesInitial VEP results of IIH patients (n=32)VEP results of the healthy control group (n=30)P-value
    Mean±SD
    Right P100, latency (ms)115.10±10.12101.48±2.47<0.001
    Left P100, latency (ms)115.19±10.04101.75±2.88<0.001
    Right amplitude (µV)10.26±4.3610.46±2.630.231
    Left amplitude (µV)9.75±4.2010.36±2.910.122

    • IIH - idiopathic intracranial hypertension, VEP - visual evoked potential, SD - standard deviation

  • Table 3

    The relationship of pathological VEP results with gender, obesity, and visual acuity and visual field findings at admission.

    VariablesInitial VEP pathological (n=18)Initial VEP normal (n=14)P-value
    Gender
     Male320.854
     Female1512
    Obesity
     No570.198
     Yes137
    Visual acuity
     Normal11130.040
     Decreased71
    Visual field
     Normal160.011
     Pathological178

    • VEP - visual evoked potential

  • Table 4

    Comparison of the initial VEP results of IIH patients with second VEP results

    VariablesInitial VEP results of IIH patientsSecond VEP results of the IIH patientsP-value
    Mean±SD
    Right P100, latency (ms)115.10±10.12118.84±12.5360.045
    Left P100, latency (ms)115.19±10.04118.69±11.0470.049
    Right amplitude (µV)10.26±4.369.84±3.6710.319
    Left amplitude (µV)9.75±4.209.69±3.6930.887

    • IIH - idiopathic intracranial hypertension, VEP - visual evoked potential, SD - standard deviation

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