Acta neurologica Scandinavica · 2001
Visually evoked potentials in respiratory chain disorders.
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Finsterer J
Аннотация
OBJECTIVES: Little is known about the frequency of abnormal visually evoked potentials (VEPs) in patients with respiratory chain disorders (RCDs). We thus wanted to investigate the frequency of abnormal VEPs in RCDs, how often VEPs are abnormal despite normal visual acuity, and which of the VEP variables are most often abnormal.
MATERIAL AND METHODS: Reversal checkerboard VEPs of 26 patients with RCDs, aged 32-74 years, were evaluated.
RESULTS: VEPs were abnormal in 17 of the 26 cases (65%). The P100 latency was prolonged at least unilaterally in 16 patients. The P100/N145 amplitude was decreased in a single patient. VEPs were abnormal without visual impairment in 9 cases (53%).
CONCLUSION: VEPs prove useful to detect clinical or subclinical impairment of the optical tract in patients with RCDs. In the majority of the cases, the P100 latencies are prolonged while the P100/N145 amplitude remains normal.
MATERIAL AND METHODS: Reversal checkerboard VEPs of 26 patients with RCDs, aged 32-74 years, were evaluated.
RESULTS: VEPs were abnormal in 17 of the 26 cases (65%). The P100 latency was prolonged at least unilaterally in 16 patients. The P100/N145 amplitude was decreased in a single patient. VEPs were abnormal without visual impairment in 9 cases (53%).
CONCLUSION: VEPs prove useful to detect clinical or subclinical impairment of the optical tract in patients with RCDs. In the majority of the cases, the P100 latencies are prolonged while the P100/N145 amplitude remains normal.