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Journal of the Korean Academy of Rehabilitation Medicine 2001;25(6):1001-1006.
Evoked Potential Findings in Chronic Renal Failure Patients with Retarded Cognitive Function.
Choi, In Sung , Lee, So Young , Kim, Jae Hyung , Lee, Sam Gyu , Rowe, Sung Man
Department of Rehabilitation Medicine, Chonnam National University Medical School, Korea.
인지기능저하를 보인 만성 신부전 환자에서 유발전위검사소견
최인성, 이소영, 김재형, 이삼규, 노성만
전남대학교 의과대학 재활의학교실
Abstract

Objective
The purpose of this study is to evaluate the relationship between cognitive function and findings of evoked potential study in chronic renal failure patients.


Method
Thirty chronic renal failure patients with cognitive dysfunction were recruited, whose mini-mental state examination (MMSE) scores were less than 24 points. According to the underlying diseases of chronic renal failure, we categorized thirty patients into diabetic group (11 patients) and non-diabetic group (19 patients), and the control-group was composed of 15 normal volunteers. Somatosensory evoked potential (SEP) on stimulating median and posterior tibial nerves, and cortical and spinal conduction time of the motor pathways were valuated.


Results
In tibial nerve SEP, N22-P38 interpeak latencies (IPL) were 18.1⁑4.2 msec in the patient group and 15.7⁑1.9 msec in the control group, respectively. In MEP, cortico-lumbar central motor conduction times (CMCT) were 19.5⁑2.7 and 16.5⁑3.0 msec, respectively. CMCT were prolonged in patients than controls (p<0.05). There was significant correlation between serum creatinine concentration and N22-P38 IPL (r=0.64, p<0.05), but, there were no correlations between the underlying diseases of chronic renal failure, duration of disease, MMSE score and cortico-lumbar CMCT, N22-P38 IPL (p>0.05).


Conclusion
Evoked potentials will be helpful in evaluating the patients with cognitive dysfunction in chronic renal failure.

Key Words: Motor evoked potentials, Somatosensory evoked potentials, Chronic renal failure, Cognitive dysfunction


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