Environmental noise as a cause of sleep disruption in an intermediate respiratory care unit
Environmental noise as a cause of sleep disruption in an intermediate respiratory care unit
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DOI：
10.1093/sleep/19.9.707
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发表时间：
1996-11-01
期刊：
影响因子：
5.6
通讯作者：
Millman, RP
中科院分区：
文献类型：
--
作者：
Aaron, JN;Carlisle, CC;Millman, RP
我们的实验室先前报告了在罗德岛医院的几个区域连续监测的峰值声级。在重症和中级呼吸监护病房（IRCU）地区，即使在夜间，大于80 a加权分贝（dBA）的声音峰值数量也很高。如此严重的环境噪音可能会扰乱睡眠。因此，我们假设大于或等于80dba的夜间峰值声级与IRCU患者睡眠中脑电图唤醒的增加有关。6名患者接受睡眠监测，同时连续记录环境峰值声音水平。每8小时（2200至0600小时）被分成30分钟的片段。如果在一个片段中有10分钟或更长时间的清醒状态，则从进一步的分析中删除该片段。在剩下的61段中，大于或等于80 dBA的声音峰值数量与睡眠唤醒之间存在很强的相关性（r = 0.57, p = 0.0001）。然后根据声音峰值的数量（分别小于或等于5,6 -15和bbb15），将这61个时期分为安静，中等响亮和非常响亮。方差分析显示，安静时期和非常吵闹时期的唤醒次数有显著差异（p = 0.001）。我们的结论是，环境噪音可能是IRCU睡眠中断的一个重要原因。
Our laboratory previously reported continuously monitored peak sound levels in several areas at Rhode Island Hospital. The number of sound peaks greater than 80 A-weighted decibels (dBA) was found to be high in the intensive and intermediate respiratory care unit (IRCU) areas, even at night. Environmental noise of this magnitude is potentially sleep-disruptive. Therefore, we hypothesized that nocturnal peak sound levels of greater than or equal to 80 dBA would be associated with an increase in EEG arousals from sleep in patients in the IRCU. Six patients underwent sleep monitoring while environmental peak sound levels were continuously recorded. Each 8-hour period (2200 to 0600 hours) was broken down into 30-minute segments. If there were 10 minutes or more of wakefulness in a segment, that segment was dropped from further analysis. Of the remaining 61 segments, there was a very strong correlation (r = 0.57, p = 0.0001) between the number of sound peaks of greater than or equal to 80 dBA and arousals from sleep. These 61 periods were then classified as quiet, moderately loud, and very loud based on the number of sound peaks (less than or equal to 5, 6-15, and >15, respectively). Analysis of variance revealed a significant difference between the number of arousals (p = 0.001) in quiet periods and that in very loud periods. We conclude that environmental noise may be an important cause of sleep disruption in the IRCU.