O015 Measuring Body Movements during Sleep. Sonomat Vs Video Polysomnography

M Lu, D Fitzgerald, C Sullivan, K Waters
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Abstract

Abstract Background Restless sleep is common in children, and video polysomnography (vPSG) has been used to score body movements during sleep. The Sonomat provides a contactless, portable alternative for home sleep studies over several nights. This study aimed to compare body movements measured by the Sonomat with those scored using vPSG. Methods Twenty-nine children (13 females, 16 males) with a median age of 5.4 years underwent concurrent Sonomat and vPSG studies. Movement indices per hour of sleep period and movement duration (%) were blindly scored on separate days. Statistical analysis included the Wilcoxon rank test and Pearson's correlations. Results Movement indices were higher on the Sonomat than vPSG (median 38.6/hr vs. 22.7/hr, p < 0.001), but movement duration did not differ (median 10.8% vs. 10.5%, p = 0.092). Comparing movements above 5 seconds, the indices became more comparable (15.9/hr vs. 19.2/hr, p = 0.05). The correlation between devices was weak for movement indices (r = 0.37, p = 0.051) but strong for movement duration (r = 0.81, p < 0.001). The Sonomat identified 82.5% of movements seen on vPSG, while vPSG identified only 43.6% of those on the Sonomat. Conclusion The Sonomat offers a contactless and portable alternative to vPSG for assessing body movements during sleep in children. It exhibited higher sensitivity in detecting shorter movements and was comparable to vPSG in movement duration. These findings suggest that the Sonomat holds promise for evaluating restless sleep in children.
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015测量睡眠时的身体运动。声纳与视频多导睡眠图
儿童睡眠不安是很常见的,视频多导睡眠描记(vPSG)已被用于记录睡眠期间的身体运动。Sonomat为几个晚上的家庭睡眠研究提供了一种非接触式、便携的选择。这项研究旨在比较由索诺玛测量的身体运动和用vPSG评分的身体运动。方法29例儿童(女13例,男16例),中位年龄5.4岁,同时进行索诺玛和vPSG研究。每小时睡眠时间的运动指数和运动持续时间(%)分别在不同的天进行盲法评分。统计分析包括Wilcoxon秩检验和Pearson相关性。结果sononomat组的运动指数高于vPSG组(中位38.6/hr vs. 22.7/hr, p <0.001),但运动持续时间没有差异(中位数10.8% vs. 10.5%, p = 0.092)。对比5秒以上的运动,各项指标更具可比性(15.9/hr vs. 19.2/hr, p = 0.05)。器械与运动指标的相关性较弱(r = 0.37, p = 0.051),与运动持续时间的相关性较强(r = 0.81, p <0.001)。Sonomat识别出vPSG上82.5%的动作,而vPSG仅识别出Sonomat上43.6%的动作。结论:Sonomat为评估儿童睡眠时的身体运动提供了一种非接触式、便携的vPSG替代方案。它在检测较短的运动中表现出更高的灵敏度,在运动持续时间上与vPSG相当。这些发现表明,索诺马特有望评估儿童的不安性睡眠。
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