Abstract: Objective To investigate the incidence and influencing factors of readmission in patients with chronic heart failure within one year after discharge. Methods Patients with chronic heart failure who were hospitalized in Huai‘an Second People’s Hospital from January 2019 to December 2021 were selected for this study. The patients were followed up for one year. Descriptive analysis method was used to analyze the readmission status of the population within one year after discharge, and univariate and multivariate analysis methods were used to analyze the influencing factors of readmission. Results A total of 981 patients with chronic heart failure were included in this study, of which 479 patients were readmitted for treatment within one year after discharge, with a readmission rate of 48.83%. Multivariate analysis showed that in crease of age （OR=1.587）, body mass index ≥ 28.0 kg/m² （OR=3.177）, course of disease （1-<5 years OR=1.562, ≥5 years OR=2.538）, cardiac function grade at discharge （grade Ⅲ OR=1.505, grade Ⅳ OR=2.097）, living alone （OR=2.583）, hypertension （OR=1.491）, coronary heart disease （OR=3.107）, dyslipidemia （OR=3.002）, poor drug compliance （OR=5.149）, irregular follow-up （OR=1.893）, failure to adhere to a low sodium diet （OR=1.491）, failure to adhere to water restriction （OR=2.010）, and self-perceived burden （moderate burden OR=3.965, severe burden OR=4.590） were influencing factors for patients with chronic heart failure to be readmitted within one year after discharge. Conclusion The readmission rate of patients with chronic heart failure within one year after discharge is high, which is influenced by multiple factors such as age, obesity, course of disease, and cardiac function grade at discharge.

Key words: Chronic heart failure, Readmission, Influencing factor