Almberg Alexandra K, Mitchell Nathan, Tonna Joseph E
Division of Cardiovascular Medicine, Department of Medicine, University of Utah Health, Salt Lake City, UT.
Division of Emergency Medicine, Department of Surgery, University of Utah Health, Salt Lake City, UT.
Crit Care Explor. 2021 Feb 11;3(2):e0342. doi: 10.1097/CCE.0000000000000342. eCollection 2021 Feb.
ICUs are loud and there is an association between ambient sound and worsened sleep quality. In contrast to ambient sound, short acoustic interruptions or sound spikes-for example, brief alarm tones-cause arousal from sleep in healthy patients, but remain understudied in critically ill patients, despite the observed frequency of ICU alarms. We collected greater than 2.3 million values of ambient sound (every second) among 14 patients in the ICU over a median of two nights (interquartile range, 1-2) each. We identified brief acoustic interruptions/sound spikes-increases of greater than or equal to 20 dB above ambient-over 1 second. Patients experienced a median of five interruptions greater than or equal to 20 dB (interquartile range, 2-12) per night. Each interruption was associated with a 1-point decrease in patient reported quality of sleep, as assessed by the Richards Campbell Sleep Questionnaire. Our observations suggest a possible relationship between acoustic interruptions and worsened perceived sleep.
重症监护病房（ICU）噪音很大，环境声音与睡眠质量恶化之间存在关联。与环境声音不同，短暂的声学干扰或声音峰值（例如，短暂的警报声）会导致健康患者从睡眠中醒来，但尽管ICU警报出现频率较高，但在重症患者中对此仍研究不足。我们在14名ICU患者中，每两晚（四分位间距为1 - 2晚）收集了超过230万个环境声音值（每秒一个）。我们识别出持续1秒以上、比环境声音高出大于或等于20分贝的短暂声学干扰/声音峰值。患者每晚经历的大于或等于20分贝的干扰中位数为5次（四分位间距为2 - 12次）。根据理查兹·坎贝尔睡眠问卷评估，每次干扰都与患者报告的睡眠质量下降1分相关。我们的观察结果表明，声学干扰与睡眠质量恶化之间可能存在关联。
