Purpose : The study aimed to identify the levels of intensive care unit(ICU) nurses’ perception of their role in life-sustaining treatment, nurse–physician collaboration, ethical dilemmas, and life-sustaining treatment nursing stress, to examine t...
Purpose : The study aimed to identify the levels of intensive care unit(ICU) nurses’ perception of their role in life-sustaining treatment, nurse–physician collaboration, ethical dilemmas, and life-sustaining treatment nursing stress, to examine the relationships among these variables, and to identify the factors influencing life-sustaining treatment nursing stress. Methods : This study was designed as a descriptive correlational study. The participants were 165 nurses working in ICU at two tertiary hospitals and one general hospital located in City B and City Y. Data collection was conducted from June 16 to July 31, 2025, using a structured online questionnaire. The instruments consisted of 13 items assessing perceptions of roles in life-sustaining treatment, 27 items on nurse–physician collaboration, 34 items on ethical dilemmas, and 28 items on life-sustaining treatment nursing stress. The collected data were analyzed using IBM SPSS Statistics 29.0. Results : The results are presented as follows. 1. The participants’ mean age was 31.01 ± 6.37 years. Most participants were female 142 (86.1%), unmarried 123 (74.5%), had no religion 126 (76.4%), and had graduated from a four-year college 149 (90.3%). Most participants were staff nurses 133 (80.6%), and 66 (40.0%) worked in medical ICU. The mean total clinical experience was 7.19 ± 4.54 years, and the mean ICU experience was 4.96 ± 3.65 years. A total of 144 (87.3%) reported having no experience with life-sustaining treatment involving family members or relatives within the past year. Participants who had received education related to life-sustaining treatment numbered 125 (75.8%), and 144 (87.3%) expressed a positive attitude toward nurses’participation in the decision-making process for life-sustaining treatment. 2. The mean score for perception of role in life-sustaining treatment was 3.85 ± 0.42 out of 5, and the mean score for nurse–physician collaboration was 3.41 ± 0.67 out of 5. The mean score for ethical dilemma was 2.42 ± 0.49 out of 4, and the mean score for life-sustaining treatment nursing stress was 3.58 ± 0.42 out of 5. 3. There was a statistically significant difference in perception of role in life-sustaining treatment according to the general characteristics of the subjects, specifically education level (F=3.39, p=.036). 4. There was a statistically significant difference in nurse–physician collaboration according to the general characteristics and life-sustaining treatment–related characteristics of the subjects, specifically gender (t=-3.97, p=.001), position (t=-2.48, p=.016), and experience with life-sustaining treatment education (t=3.38, p=.001). 5. There was a statistically significant difference in ethical dilemma according to the general characteristics and life-sustaining treatment–related characteristics of the subjects, specifically age (t=-3.78, p<.001), total clinical experience (F=9.53, p<.001), ICU experience (F=6.53, p=.002), family experience with life-sustaining treatment within the past year (t=2.02, p=.045), and experience with life-sustaining treatment education (t=2.01, p=.046). 6. There was no statistically significant difference in life-sustaining treatment nursing stress according to either the general characteristics or life-sustaining treatment–related characteristics of the subjects. 7. Life-sustaining treatment nursing stress showed significant positive correlations with perception of role in life-sustaining treatment (r=.39, p<.001) and ethical dilemma (r=.56, p<.001). 8. In the multiple regression analysis, perception of the role in life-sustaining treatment (β=.27, p<.001) and ethical dilemma (β =.50, p<.001) were identified as significant positive predictors of life-sustaining treatment nursing stress. The regression model explained 37.5% of the variance (Adjusted R²=.375, F=50.23, p<.001). Conclusion : This study identified that ICU nurses’ perceptions of their roles in life-sustaining treatment and their ethical dilemmas were major factors influencing life-sustaining treatment nursing stress. To reduce this stress, it is necessary to establish institutional systems—such as policies or in-hospital guidelines—that clearly define nurses’ roles and scope of practice so that they can fully perform their responsibilities in the life-sustaining treatment process. Systematic education is also required to support nurses’ active participation and role performance. In addition, programs related to nursing ethics, including counseling services and support systems, should be implemented to alleviate nurses’ ethical dilemmas and strengthen their ethical nursing competence. Finally, securing an adequate number of nursing personnel is essential to reduce the work burden. Through these multifaceted efforts, it is expected that life-sustaining treatment nursing stress among ICU nurses will be alleviated, thereby fostering a clinical environment that enables the provision of higher-quality nursing care.