Abstract: Objective: To develop a nursing decision support system and explore its effects in the whole process management of Incontinence Associated Dermatitis (IAD). Methods: Using literature analysis, theoretical analysis, expert group discussion and empirical research, we developed a nursing decision support system for the whole process management of IAD. This decision support system was applied to 2559 nurses in 42 clinical departments from January to December 2021 from assessment, diagnosis, identification to pressure injury, planning, implementation, and evaluation. The IAD knowledge level of nurses, the implementation rate, and the incidence of IAD were compared before and after the use of this decision support system. Results: Compared with the pre-implementation of the system, the incidence of IAD decreased from 0.15% to 0.12% (P<0.05). Nurses' knowledge level of IAD-related knowledge increased from (75.32±0.19) to (87.41±0.10) (P<0.05). The implementation rate of nurses' measures of IAD prevention including etiology management, urine and stool collection, washing frequency, washing solution and use of substances and use of skin moisturizers were improved (P<0.05). Conclusion: The nursing decision support system can assist, supplement, guide, and manage clinical care and effective decision-making, improve the implementation of IAD prevention measures, reduce the incidence of IAD, promote the healing of IAD, and improve nursing quality and nurse-patient satisfaction.

Key words: decision support system; Incontinence Associated Dermatitis; whole process management; management mode; nursing quality