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Tuesday, 14 July 2009
Learning Objective 1: The learner will be able to understand the effect of different working shift with the objective polysomnography
Learning Objective 2: The learner will be able to choice the best working shift with the objective polysomnography
The purpose of the study is to investigate the effect of different working shift with the objective polysomnography of the medical center nursing staffs in the sourthern Taiwan . The study is an experimental crossover design and totally 24 subjects will be randomly recruited. Polysomnography will be used for data collection in this study. The polysomnography (PSG) consist of sleep stage, sleep efficiency, sleep latency, sleep respiration, saturation of oxygen and ECG monitoring. Data will be analyzed with mean, standard deviation, Repeat measure ANOVA . We will then look at how these survey data relate with different working shift. The goals of this study are to provide the evidence and further improve nursing staffs’ health, sleep quality and performance and thereby improve patient safety. The results showed that total sleep time (TST) following day shift was significantly longer than those following evening or night shift. The sleep efficiency (SE) was the lowest in those working on fixed night shift (76.8±21.44). The slow wave sleep (stage III and IV) was significantly increased (P < 0.05) and rapid eye movement (REM) sleep was significantly decreased in those working on fast regular shift and fixed night shift. Our preliminary data can offer objective evidence to those medical leaders who are in charge of managing shift work schedule in order to improve sleep quality of nursing staffs. We can not totally exclude the confounding effect from environmental factors of sleep laboratory and mismatch between real sleep schedule and arranged sleep schedule in sleep lab. Both might have influence on the results. A regular sleep diary might help to clarify whether “mismatched sleep schedule” exists or not in future research.
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