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Data Acquisition and Analysis In Brainstem Evoked Response Audiometry In Mice

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Auditory brain-stem evoked potentials in patients undergoing dialysis.

H Pratt, G Brodsky, M Goldsher

Electroencephalography and Clinical Neurophysiology

|January 1, 1986

Summary

Dialysis impacts auditory brain-stem evoked potentials (ABEPs) in renal failure patients, showing abnormalities linked to calcium levels and acute changes post-dialysis. These findings highlight auditory pathway dysfunction in kidney disease.

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Area of Science:

Neuroscience
Nephrology
Audiology

Background:

Renal failure and dialysis can affect neurological function.
Auditory brain-stem evoked potentials (ABEPs) assess auditory pathway integrity.

Purpose of the Study:

To investigate auditory pathway function in patients with renal failure undergoing dialysis.
To evaluate the chronic and acute effects of dialysis on ABEPs and blood chemistry.

Main Methods:

ABEPs and pure-tone audiograms were recorded in 38 dialysis patients and 40 controls.
Blood chemistry, including calcium, was analyzed before and after dialysis sessions.
ABEPs were measured at click rates of 10/sec and 55/sec.

Main Results:

24% of patients showed ABEP abnormalities at 10/sec, increasing to 44% at 55/sec.
Abnormalities included prolonged peak and interpeak latencies.
Pre-dialysis calcium levels differed between patients with and without ABEP abnormalities.
Dialysis caused acute changes in blood chemistry, ABEP latencies, and interpeak latencies.
Acute effects on calcium correlated with changes in ABEP latencies.

Conclusions:

Renal failure and dialysis induce chronic and acute changes in the auditory brain-stem pathway.
ABEPs, particularly at higher stimulus rates, reveal dysfunction in dialysis patients.
Calcium levels and dialysis-induced fluctuations are implicated in auditory pathway alterations.