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Pattern-reversal visual evoked potentials in patients with chronic renal insufficiency
Electroencephalography and Clinical Neurophysiology
|November 1, 1983
Summary
Visual evoked potentials (VEPs) reveal neurological changes in chronic kidney disease. Dialysis patients showed significant VEP alterations, while transplant recipients had prolonged latencies, indicating persistent visual pathway dysfunction.
Area of Science:
- Neuroscience
- Nephrology
- Ophthalmology
Background:
- Chronic renal insufficiency (CRI) can lead to systemic complications affecting multiple organs.
- Neurological complications are common in patients with kidney disease, impacting the central and peripheral nervous systems.
Purpose of the Study:
- To investigate the impact of chronic renal insufficiency and its treatments on visual pathway function using VEPs.
- To assess changes in VEPs in patients undergoing dialysis, those with azotemia, and kidney transplant recipients.
Main Methods:
- Visual evoked potentials (VEPs) were recorded from 88 patients with CRI at two 6-month intervals.
- VEPs were analyzed for amplitude and peak latency changes across different patient groups (dialyzed, non-dialyzed azotemic, post-transplant).
Main Results:
- Dialyzed patients exhibited significant decreases in VEP amplitudes and prolonged peak latencies.
- Non-dialyzed azotemic patients showed smaller, but related, VEP changes.
- Kidney transplant recipients had normal VEP amplitudes but prolonged peak latencies.
Conclusions:
- Chronic renal insufficiency and its management significantly alter visual evoked potentials.
- VEP abnormalities suggest subclinical visual pathway dysfunction in CRI patients, persisting even after kidney transplantation.
- No direct correlation was found between VEP changes and serum creatinine or urea levels.