Abstract
The prevalence of portable media device (PMD) use has proliferated, potentially causing serious problems, particularly in critical situations. The main aim of the present study was to investigate the relationship between pre-sleep PMD use and cognitive performance, as well as the mediating effects of sleep quality among nurses. A cross-sectional study was designed, with 200 registered nurses voluntarily participating. The average time spent on PMDs was self-reported. The Pittsburgh Sleep Quality Index, the epworth sleepiness scale, the Occupational cognitive failures questionnaire, and the Nursing Errors Questionnaire were used to collect data. Correlation analyses and structural equation modeling were conducted. Significant relationships were found between pre-sleep PMD use and all variables of interest. Sleep quality was significantly related to daytime sleepiness and occupational cognitive failures, mediating the effect of pre-sleep PMD use on these two variables. Problematic use of PMDs at bedtime may be considered an unsafe act for healthcare workers. Healthcare providers should be aware of the potential risks induced by excessive PMD use. Creating a culture of proper smartphone use is crucial for overcoming these challenges.