Background: Timely light exposure is a vital aspect to achieve better sleep and well-being. As there are risks with a disturbed circadian rhythm and benefits with light settings that stimulate the rhythm, the circadian effective light, circadian stimulus (CS), for radiographers was examined. Aim: The aim of the study was to compare radiographers’ light environment on the workstations, at a university hospital in Southern Sweden in the form of CS and relate that to recommendations published by the Swedish Environmental Protection Agency. Method: A cross-sectional method has been applied. The measurements for CS were collected in all labs in the radiology department in the middle of January. Result: A total of 804 measures were evenly collected resulting in a median for the 19 labs, where the observed median for all labs was 0.091 CS which is significantly lower than the recommended value of 0.3 CS ( p < .001). Comparing work light settings with maximum light levels in the brightest and darkest labs showed a significant difference ( p < .001). Conclusion: The CS values in the labs, at the radiology department at a university hospital in Southern Sweden, do not reach the recommended values of circadian stimulus published by the Swedish Environmental Protection Agency when the radiographers themselves set the light. There is a potential for improvement as a significant difference could be seen between the chosen level of light and the maximum possible level of light.

中文翻译：

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瑞典放射技师光环境中昼夜节律刺激的横断面研究


背景：及时光照是实现更好睡眠和健康的重要方面。由于昼夜节律紊乱存在风险，而刺激昼夜节律的光设置有好处，因此对放射技师的昼夜节律有效光、昼夜节律刺激 (CS) 进行了检查。目的：本研究的目的是以 CS 的形式比较瑞典南部一所大学医院工作站上放射技师的光环境，并将其与瑞典环境保护局发布的建议联系起来。方法：采用截面法。 CS 测量值是在一月中旬在放射科的所有实验室收集的。结果：均匀收集了 804 个测量值，得出 19 个实验室的中位数，其中所有实验室的观察中位数为 0.091 CS，显着低于建议值 0.3 CS (p < .001)。将工作灯设置与最亮和最暗实验室中的最大光照水平进行比较显示出显着差异 (p < .001)。结论：瑞典南部一所大学医院放射科实验室的 CS 值未达到瑞典环境保护局公布的放射技师自己设置灯光时昼夜节律刺激的推荐值。存在改进的潜力，因为可以看到所选的光水平和最大可能的光水平之间存在显着差异。