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Evoked potentials in uremia: basal and follow-up data
A Albertazzi1, B Di Paolo, T Di Marco
1Institute of Nephrology & Dialysis, University of Chieti, Italy.
Life Support Systems : the Journal of the European Society for Artificial Organs
|January 1, 1985
Summary
Evoked potentials (EPs) effectively detect early nervous system damage in uremia, tracking sensory function changes over seven years. This neurophysiological monitoring aids in optimizing uremia therapies.
Area of Science:
- Neuroscience
- Nephrology
- Clinical Electrophysiology
Background:
- Uremia is associated with central and peripheral nervous system damage.
- Evoked potentials (EPs) are utilized to detect early-stage neurological alterations in uremic patients.
- Monitoring sensory functions over time can reveal disease progression.
Purpose of the Study:
- To evaluate the utility of EPs in assessing neurological damage in uremia.
- To track sensory function changes throughout the stages of uremia.
- To determine the reliability of EPs for monitoring uremic neurotoxicity.
Main Methods:
- Fifty-three uremic subjects were followed for seven years.
- Yearly recordings of visual evoked potentials (VEPs), auditory evoked potentials (AEPs), and somatosensory evoked potentials (SEPs) were performed.
- Analysis focused on wave latencies, amplitudes, and morphology.
Main Results:
- Abnormalities in VEPs (P100 latency/amplitude) were found in approximately 70% of visual systems.
- AEPs showed abnormalities in 53% of cases, affecting peak latencies, interpeak times, and peak ratios.
- SEPs revealed altered latency and morphology in 75% of cases across lumbar, cervical, and cranial recordings.
Conclusions:
- Evoked cerebral biorhythms serve as sensitive and objective indicators of cerebral function in uremia.
- Persistent abnormalities detected by EPs confirm the technique's reliability in evaluating neuropathic uremic conditions.
- EP follow-up can guide and optimize therapies for uremia.