Abstract：Objective To explore the effect of the self-determination theory model in elderly patients with chronic heart failure. Methods A total of 82 elderly patients with chronic heart failure treated in Fuyang People’s Hospital of Anhui Province from May 2019 to December 2020 were selected as the study objects, they were divided into control group and observation group according to random number table method, with 41 cases in each group. The control group implemented routine nursing intervention, and the observation group implemented self-determination theory model intervention based on the control group. Decision conflict, health behavior ability, and quality of life improvement were compared between the two groups before intervention and two weeks after intervention. Results After two weeks of intervention, the scores of uncertainty, information informing, clear values and external support in decision conflict in both groups were lower than those before intervention, and the observation group was lower than the control group (P＜0.05). The scores of exercise, health responsibility, psychological well-being, and nutrition in health behavior ability were higher than those before intervention, and those in the observation group were higher than those in the control group (P＜0.05). The scores in the physical, emotional, and other areas of quality of life were lower than those before intervention, and those of the observation group were lower than those of the control group (P＜0.05). Conclusion The self-decision theory can reduce the decision conflict and improve the health behavior and quality of life.
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