| Summary: | 碩士 === 國立陽明大學 === 護理學系暨研究所 === 96 === The purpose of this study was to explore the sleep quality of the critical ill patient in the intensive care unit. A convenient sample of 70 patients was included and their sleeps during their ICU stay were observed. Data collected were the care activities, environmental noise and light levels. Sleep quality was assessed by observation and actigraphy during 10pm to 6am. Daytime sleepiness was assessed by the Stanford Sleepiness Scale (SSS) at 7:30 to 8:30 am. The total observation nights were 269. Data were processed by SPSS 13.0 and the major statistical procedures applied were t-test, chi-square, Pearson correlation, and stepwise multiple linear correlation. A p value of less than .05 was taken as significant.
The results of this study demonstrated that the mean frequency of care activity per night was 20.2(SD 4.5) with the most frequent at 1 AM and least frequent at 4 AM. The mean duration of sleep was 3.0(SD 1.8) hours by observation and 7.5(SD 1.0) hours by actigraphy. The average of SSS was 3 to 4.
The significant factors affecting sleep were care activities, noise, age, days of stay in ICU and light. The significant predictors of sleep were: numbers of care activity and length of time when the noise was under 45dB. In the night of ICU stay longer than 4 days, the predictors of sleep were: numbers of care activity, length of time when the noise was under 45dB, age, days of stay in ICU and length of time under bright light.
The findings of this study provide evidence for reference in developing nursing strategies to improve patient’s sleep in the intensive care unit.
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