BACKGROUND & AIMS:
PURPOSE:This study aimed to investigate the behavior patterns of typical noise sources in critical care wards and relate their patterns to health care environment in which the sources adapt themselves in several different forms.
METHODS:An effective observation approach was designed for noise behavior in the critical care environment. Five descriptors have been identified for the behavior observations, namely, interval, frequency, duration, perceived loudness, and location. Both the single-bed and the multiple-bed wards at the selected Critical Care Department were randomly observed for 3 inconsecutive nights, from 11:30 pm to 7:00 am the following morning. The Matlab distribution fitting tool was applied afterward to plot several types of distributions and estimate the corresponding parameters.
RESULTS:The lognormal distribution was considered the most appropriate statistical distribution for noise behaviors in terms of the interval and duration patterns. The turning of patients by staff was closely related to the increasing occurrences of noises. Among the observed noises, talking was identified with the highest frequency, shortest intervals, and the longest durations, followed by monitor alarms. The perceived loudness of talking in the nighttime wards was classified into 3 levels (raised, normal, and low). Most people engaged in verbal communication in the single-bed wards that occurred around the Entrance Zone, whereas talking in the multiple-bed wards was more likely to be situated in the Staff Work Zone. As expected, more occurrences of noises along with longer duration were observed in multiple-bed wards rather than single-bed wards. "Monitor plus ventilator alarms" was the most commonly observed combination of multiple noises.
背景与目标:
目的:本研究旨在调查重症监护病房中典型噪声源的行为模式,并将其模式与卫生保健环境相关联,在该环境中,噪声源以几种不同形式进行适应。
方法:针对重症监护环境中的噪声行为设计了一种有效的观察方法。已经为行为观察确定了五个描述符,即间隔,频率,持续时间,感知的响度和位置。从所选的重症监护室的单床病房和多床病房在晚上11:30 pm至第二天早上7:00连续3个连续晚上。之后使用Matlab分布拟合工具绘制几种类型的分布并估计相应的参数。
结果:就间隔和持续时间模式而言,对数正态分布被认为是最适合噪声行为的统计分布。医务人员的转机与噪声的发生率增加密切相关。在观察到的噪声中,说话被确定为频率最高,间隔最短,持续时间最长,其次是监视器警报。夜间病房中说话的感觉响度分为3级(提高,正常和低)。大多数人在入口区附近的单人病房中进行口头交流,而在多人病房中交谈的人更可能位于员工工作区。正如预期的那样,在多床病房而不是单床病房中观察到了更多的噪音并伴有更长的持续时间。 “监视器加呼吸机警报”是多种噪声中最常见的组合。