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정상노인과 경도인지손상 환자에서 수면인자와 신경인지기능의 연관성

Relationship of Sleep Factors with Neurocognitive Function in Normal Elderly Subjects and Mild Cognitive Impairment (MCI) Patients

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참고문헌

키워드

주제분류정신과학

초록

주간졸음의 악화는 지역사회에 거주하는 정상노인뿐 아니라, MCI노인에서 실행기능 감퇴와의 관련성이 시사되며, 수면호흡장애의 위험성은 정상노인에서만 실행기능 감퇴와의 관련성을 보였고, MCI 노인에서는 그 관련성이 시사되지 않았다. 본 연구결과를 토대로, 향후 지역사회 거주하는 정상노인과 MCI 노인에서 객관적 수면검사를 통한 수면장애와 신경인지기능과의 관련성을 비교 분석하는 연구가 뒤따라 할 것으로 생각된다.

Abstract

Objectives:We aimed to compare sleep factors including daytime sleepiness, sleep apnea and insomnia between mild cognitive impairment (MCI) patients and normal control (NC) subjects and to illustrate their relationship with neuropsychological function in the preclinical stage of dementia. Methods:Epworth Sleepiness Scale (ESS), sleep apnea subscale of Sleep Disorders Questionnaire (SA) and questionnaire on insomnia were administered to community-dwelling elderly subjects above the age of 60. Both clinical and neuropsychological batteries of the Korean version of the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD-K) assessment packet and Stroop Color and Word Test (SCWT) were done for each subject. Seventy seven NC subjects and 47 MCI patients were selected. Results:In the NC group, ESS scores negatively correlated with Stroop interference (SI) scores. SA scores were negatively correlated with Stroop Color Word (SCW) and SI scores. In the MCI group, ESS scores negatively correlated with SCW scores, and SA scores had no correlation with each neurocognitive function test. Conclusion:Daytime sleepiness was associated with impaired executive function in community-dwelling normal elderly subjects and MCI patients. But the higher risk of SA was associated with decreased executive function only in normal elderly subjects. (J Korean Neuropsychiatr Assoc 2007;46(1):41-49)

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