DuBose Jennifer, Davis Robert G, Campiglia Gabrielle, Wilkerson Andrea, Zimring Craig
SimTigrate Design Lab, Georgia Institute of Technology, Atlanta, GA, USA.
Pacific Northwest National Laboratory, Richland, OR, USA.
HERD. 2022 Apr;15(2):79-95. doi: 10.1177/19375867211063481. Epub 2021 Nov 30.
This study explores whether "future" lighting systems that provide greater control and opportunity for circadian synchronization are acceptable to participants in the role of patients.
Tunable, dimmable light emitting diode systems provide multiple potential benefits for healthcare. They can provide significant energy savings, support circadian synchronization by varying the spectrum and intensity of light over the course of the day, address nighttime navigation needs, and provide user-friendly control. There is an emerging understanding of the important visual and nonvisual effects of light; however, important questions remain about the experience and acceptability of this "future" lighting if we are to adopt it broadly.
Volunteer participants (34) performed a series of tasks typical of patients, such as reading or watching a video, in a full-scale simulated inpatient room. Each participant conducted these tasks under 12 lighting conditions in a counterbalanced order that included varying illuminance levels, correlated color temperatures (CCTs), and in a few conditions, saturated colors. The participants rated each lighting condition on comfort, intensity, appropriateness, and naturalness.
The participants found that conditions with CCTs of 5,000 K and higher were significantly less comfortable and less natural than conditions with lower CCTs. Conditions with lighting distributed in multiple zones in the patient room were viewed more favorably than a traditional overbed configuration. The participants in this simulated patient study reacted negatively to colored lighting on the footwall of the room but found a mixture of warmer and cooler luminaire CCTs acceptable.
本研究探讨提供更大控制和昼夜节律同步机会的“未来”照明系统对于扮演患者角色的参与者而言是否可接受。
可调光、可调光的发光二极管系统为医疗保健带来多种潜在益处。它们可显著节省能源，通过在一天中改变光的光谱和强度来支持昼夜节律同步，满足夜间导航需求，并提供用户友好的控制。人们对光的重要视觉和非视觉影响的认识正在不断加深；然而，如果要广泛采用这种“未来”照明，关于其体验和可接受性仍存在重要问题。
34名志愿者参与者在一个全尺寸模拟病房中执行一系列典型的患者任务，如阅读或观看视频。每位参与者以平衡的顺序在12种照明条件下进行这些任务，这些条件包括不同的照度水平、相关色温（CCT），在少数条件下还包括饱和颜色。参与者对每种照明条件的舒适度、强度、适宜性和自然度进行评分。
参与者发现，色温为5000K及以上的条件明显不如色温较低的条件舒适和自然。病房内照明分布在多个区域的条件比传统的床头灯配置更受青睐。在这项模拟患者研究中，参与者对病房脚墙上的彩色照明反应消极，但发现暖色调和冷色调灯具色温混合的情况是可以接受的。
