Patients
Heart Failure, heart failure
HEART FAILURE, HEART FAILURE
This study is a real-world study involving patients with heart failure who were treated at the Affiliated Hospital of North Sichuan Medical College from July 2017 to June 2021. Inclusion criteria include meeting the diagnosis and treatment standards for HF in the “Chinese Heart Failure Diagnosis and Treatment Guidelines 2018”; receiving heart failure drug treatment, including S-V (ARNI), ARB, ACEI, etc.; follow-up for at least 6 months; patients ≥ 18 years old. The study excluded patients with contraindications to the use of HF medications, patients with follow-up less than half a year and patients with missing follow-up data. All patients were divided into standard treatment group and ARNI group according to whether they received combined ARNI treatment or not (Fig. 
Flow chart of the sduty