Abstract: Objective To explore the effect of nursing intervention based on cross theoretical model on improving the lifestyle of patients with acute myocardial infarction. Methods 100 patients with acute myocardial infarction treated in our hospital from April 2021 to September 2021 were randomly divided into control group (n = 50) and test group (n = 50) according to the numerical table method. Both groups were given routine treatment. The control group was given routine nursing intervention based on routine treatment, and the test group was given nursing intervention based on cross theoretical model. The scores of disease management ability, Health Promoting Lifestyle Scale (Health Promotion Lifestyle Profile, HPLP) and incidence of adverse cardiac events and readmission rate. Results The scores of emergency management, self-care knowledge and clinical symptoms in the test group were significantly higher than those in the control group (P<0.05); the scores of nutrition management, rehabilitation exercise, health responsibility, interpersonal relationship, self realization and stress management in the test group were significantly higher than those in the control group (P < 0.05); the incidence of adverse cardiac events and readmission rate in the test group were significantly lower than those in the control group (P<0.05). Conclusion Nursing intervention based on cross theoretical model can help to improve the self-efficacy and lifestyle of patients with acute myocardial infarction, improve their disease management ability, so as to reduce adverse cardiac events and reduce the readmission rate, which is worthy of clinical application.

Key words: cross theoretical model, acute myocardial infarction, life style, disease management, adverse cardiac events