Population and sample of the project:
The population will consist of all patients undergoing surgery in the Department of Cardiovascular Surgery at Lokman Hekim University Akay Hospital and treated in the ICU. Power analysis was performed to determine the number of people to be included in the study. The power of the test was calculated with the G\*Power 3.1 programme. As a similar study in the relevant literature, Pehlivan (2021) calculated the effect size for the state anxiety difference as 0.646. In order to exceed the 90% value in determining the power of the study; 84 people, including 42 people in groups with a significance level of 5% and an effect size of 0.646, should be reached (df=82; t=1.664). Considering the high power of the test and the losses in the study, it was aimed to reach a total of 100 people, including 50 people in the groups.
All nurses working in the ICU of the Cardiovascular Surgery Department of Lokman Hekim University Akay Hospital will constitute the population of the study (N:10) and the nurses who volunteered to participate in the study will constitute the sample. Without randomisation for nurses, all nurses will be ensured to use the mobile application, pre-test and post-test will be performed.
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