Others 報  告 早産児にとってよりよい光環境のパイロットスタディ ― アクチグラフによる活動量と生理学的反応の分析 ―

白水, 雅子  ,  新小田, 春美  ,  Shiramizu, Masako  ,  Shinkoda, Harumi

18 ( 1 )  , pp.15 - 21 , 2016-03-15 , 三重大学医学部看護学科
Purpose: In this study, we examine whether premature infants・amount of activity and physiological response are different depending on the difference in lighting conditions. To construct the most suitable therapeutic environment for premature infants, it is necessary to understand the effects of light.Methods: Participants were 8 healthy preterm infants who were born less than 37 gestational weeks. None of the infants suffer from neurologic abnormality, and respiratory status and circulation state were stable. The survey items were the characteristics of participants, amount of activity, heart rates, respiratory rates, and oxygen saturation. Amount of activities, heart rates, respiratory rates, and oxygen saturation were measured twice per each infant in day-time and (7:00 AM to 21:00 PM) in night-time (21:00 PM to 7:00 AM). In natural environments, observation was carried out for 150 minutes after each feeding. Activities were obtained by actigraphs.Results: The subjects were 32.6 ア 1.8weeks gestational at birth and 34.9 ア 0.4 corrected weeks at the time of observation. The lighting intensity around the infants・head, 47.0 ア 20.2 lux in day-time, and 8.8 ア 7.3 lux at night-time. There was no significant difference between day-time and night-time in 150 minutes measurements after feeding. We divided 150-minute measurements after feeding into five time periods of 30 minutes. Then, we compared the changes for amount of activity and physiological response in day-time and night-time. There were no significant differences.Conclusion: In comparing the lighting environment between 47 lux and 8 lux, there were no significant differences in the amount of activity and the physiological response for premature infants corrected 35 weeks. In addition, the results showed no indication of stress reaction.


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