ObjectiveTo explore the application of self-determination theory in health promotion behavior of patients with coronary heart disease after PCI.

MethodsSeventy-eight patients with coronary heart disease who received PIC treatment in the Department of Cardiovascular Medicine of our hospital were selected as the research object, and non-corresponding control group was used.Thirty-eight patients from January 2020 to 2021 were used as the control group, and 40 patients from February 2021 to April 2022 were used as the observation group, and the control group received routine nursing intervention.The experimental group adopted the health promoting behavior intervention nursing program based on self-determination theory.The intervention effect was evaluated by health promoting lifestyle scale Ⅱ(HPLP Ⅱ), coronary heart disease education questionnaire and Seattle angina questionnaire(SAQ).

ResultsAfter 4 and 12 weeks of intervention, the total score of HPLP-Ⅱ and the scores of its each dimension, the scores of CADE-Q SV in the observation group were higher than those in the control group (P <0.05 to P <0.01).After 4 weeks of intervention, the total score of SAQ, angina attack and disease awareness in the observation group were higher than those in the control group (P <0.05 to P <0.01);after 12 weeks of intervention, the total score of SAQ and the scores of its each dimension in the observation group were higher than those in the control group (P <0.05 to P <0.01)).

ConclusionsSelf-determination theory has a positive role in guiding the health promoting behavior of patients with coronary heart disease after PCI.It can improve the level of health promoting behavior and disease knowledge of patients after PCI, and improve the quality of life of patients with coronary heart disease after PCI.