Disturbance in daily sleep/wake patterns in patients with cognitive impairment and decreased daily activity.
The sleep/wake patterns of 121 chronically ill, mentally and physically handicapped patients were visually monitored hourly for 14 consecutive days. Four types of sleep/wake patterns were found. In order to investigate how cognitive and physical functions correlated with sleep disorders, patients were classified based on a scale of mental function and the grading of daily activity. The percent of total sleep hours and the sleep rating, showing disturbances in sleep/wake pattern, were evaluated. We found a high degree of individuality in sleep/wake patterns. Sleep disturbance was associated with daily activity as well as with cognitive impairment. This monitoring system provides medical personnel with valuable information for clinical management.
Meguro
K
K
Department of Geriatric Medicine, Tohoku University School of Medicine, Sendai, Japan.
Ueda
M
M
Yamaguchi
T
T
Sekita
Y
Y
Yamazaki
H
H
Oikawa
Y
Y
Kikuchi
Y
Y
Matsuzawa
T
T
D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D003072:Cognition Disorders / Q000150:complications* / Q000503:physiopathology; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012890:Sleep; D012893:Sleep Wake Disorders / Q000209:etiology*; D014851:Wakefulness