Mapping sources of noise in an intensive care unit
Mapping sources of noise in an intensive care unit
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重症监护病房中的噪声源映射
DOI：
10.1111/anae.14690
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发表时间：
2019-08-01
期刊：
影响因子：
10.7
通讯作者：
Young, J. D.
中科院分区：
文献类型：
--
作者：
Darbyshire, J. L.;Mueller-Trapet, M.;Young, J. D.
医院的过度噪音对病人的睡眠和恢复产生不利影响，使工作人员感到压力和疲劳，并妨碍沟通。世界卫生组织建议将音量控制在35分贝以内。这在重症监护病房可能无法实现，但从目前的水平上减少一些应该是可能的。初步的步骤是确定主要的噪声源。作为一个大型项目的一部分，我们调查了减少环境噪音的技术，我们在一个有四个床位的成人重症监护病房安装了一个麦克风阵列系统。它连续测量噪声源的位置和声压级。本报告总结了一年来取得的成果。数据收集于2017年4月7日至2018年4月16日（含）。全天数据可获取248天。声音定位系统显示，大多数响亮的声音来自非常有限的区域，非常靠近患者的耳朵。这种接近使高环境噪音水平对患者的不利影响最大化。其中一些可能是病人、护理人员和来访者之间的适当沟通。然而，很大一部分响亮的声音可能来自床边的设备警报器。重新设计重症监护病房环境，使警报声音远离床边，可能会显著减少患者的环境噪音负担。
Excessive noise in hospitals adversely affects patients' sleep and recovery, causes stress and fatigue in staff and hampers communication. The World Health Organization suggests sound levels should be limited to 35 decibels. This is probably unachievable in intensive care units, but some reduction from current levels should be possible. A preliminary step would be to identify principal sources of noise. As part of a larger project investigating techniques to reduce environmental noise, we installed a microphone array system in one with four beds in an adult general intensive care unit. This continuously measured locations and sound pressure levels of noise sources. This report summarises results recorded over one year. Data were collected between 7 April 2017 and 16 April 2018 inclusive. Data for a whole day were available for 248 days. The sound location system revealed that the majority of loud sounds originated from extremely limited areas, very close to patients' ears. This proximity maximises the adverse effects of high environmental noise levels for patients. Some of this was likely to be appropriate communication between the patient, their caring staff and visitors. However, a significant proportion of loud sounds may originate from equipment alarms which are sited at the bedside. A redesign of the intensive care unit environment to move alarm sounds away from the bed-side might significantly reduce the environmental noise burden to patients.