Ma. Mograss et al., MOVEMENT AROUSALS - DESCRIPTION, CLASSIFICATION, AND RELATIONSHIP TO SLEEP-APNEA IN CHILDREN, American journal of respiratory and critical care medicine, 150(6), 1994, pp. 1690-1696
Citations number
30
Categorie Soggetti
Emergency Medicine & Critical Care","Respiratory System
Movement/arousal has been described as a characteristic of adult obstr
uctive sleep apnea syndrome (OSAS), but opinions differ as to whether
or not OSAS in children increases the frequency of movement/arousal. T
he problem that we decided to address was the lack of a comprehensive
definition and characterization of movement/arousals in children. We t
herefore quantified and classified movement/arousals during nocturnal
polysomnography in 15 children 5.2 +/- 2.7 SD yr of age being evaluate
d for OSAS. Movement/arousals were defined by modifying the standard c
riteria for scoring arousals in adults. Median respiratory disturbance
index was 4.4/h, with a range of 1 to 28/h. Videotape review was requ
ired to adequately distinguish technician-induced from spontaneous mov
ement/arousals. Although movement/arousal durations varied from 1 s to
prolonged awakenings, a high frequency of brief, 1- to 3-s movement/a
rousals occurred in all classification categories: respiratory, 44%; t
echnician-induced, 33%; spontaneous, 36%. When comparing a 16-channel
PSG montage with that of a seven-channel cardiorespiratory montage, we
found that 84% of all movement/arousals could be detected using the a
bbreviated montage. In conclusion, we propose a simple classification
system that distinguishes th ree types of movement/arousals: respirato
ry, technician-induced, and spontaneous. Our results further suggest t
hat a simple montage using cardiorespiratory channels and videotaping
would be suitable for home study and sensitive for identifying movemen
t/arousals.