Clinical Research Directory

Inclusion Criteria: 1. Patients with chronic heart failure (NYHA grade ⅱ-ⅳ) with reduced ejection fraction (LVEF≤40%) and elevated BNP were diagnosed 1a. 2. Patients received a stable dose of the underlying treatment for heart failure, defined as no change in dose for at least 4 weeks before screening 1b. 3. Volunteer to participate in the trial and sign an informed consent form 1c. Exclusion Criteria: 1. Previous continuous administration of sacubitril valsartan sodium 150mg bid or more for more than 3 months 1a. 2. Use of other study drugs or use of any study medical device within 1 day of the visit or within 30 days prior to the visit or within 5 half-lives of the drug, whichever is longer 1b. 3. Known or suspected allergy to S086, sacubitril valsartan sodium, ARB, ACEI, or enkephin inhibitor (NEPI), and known or suspected contraindications to sacubitril valsartan sodium 1c. 4. A previous history of intolerance to the recommended target dose of ACEI or ARB 1d. 5. He had a history of angioedema 1e. 6. Acute coronary syndrome occurred within 6 weeks before visit 1 1f.