Abstract

Introduction: Sleep is one of the basic human needs, that any disorder affecting one's body systems. Due to the high prevalence of sleep disorder in patients admitted to the cardiac care unit and considering that the most important factors affecting the sleep such as light and noise we decided to investigate the effect of adjustment of environmental factors on the quality of sleep in patients admitted to the CCU. Methods: This is a clinical trial in which 70 heart patients were randomly divided into two groups of control and intervention. At the beginning of the study (3 days after admission), for both groups, the Peterbosbug standard sleep quality questionnaire were completed for the first time. Then, for intervention group, moderate environmental factors and Then, 3 days after the above interventions (the 6th day of admission), the sleep quality questionnaire was completed again. For the control group, without creating any changes in the environmental conditions of the unit, and in the same routine physical environment, the questionnaires were completed at the same intervals. The results were analyzed using descriptive tests and inferential statistics. Results: The mean sleep quality in the intervention group before and after the intervention was 42.3±14.20 and 57.3±15.30, which was statistically significant (p = 0.001) and in the control group before and after the intervention was 43.1±12.12 and 47.15±11.9 that was not statistically significant. (p =0.2). Conclusion: According the results, adjustment of environmental factors can increase the quality of sleep and can be used as one of the non-pharmacological and effective methods for improving sleep quality.