Cohort Study of Chronic Heart Failure

Inclusion criteria

• Age ≥18 years;
• Fulfill at least one of the following criteria：①History of chronic heart failure;②New-onset heart failure with LVEF <50%；③New-onset heart failure with LVEF≧50%，E/e'≧15 and BNP>400 pg/mL/NT-proBNP(<50 years, >450 pg/mL; 50~75 years, >900 pg/mL; >75 years, >1800 pg/mL)
• Etiology: dilated cardiomyopathy, hypertensive heart disease, ischaemic cardiomyopathy, Non-severe valvular heart disease；
• Primary post-discharge therapy: oral medication;
• Sign the informed consent form.

Exclusion criteria

• Patients with renal failure (Ccr<30ml/min) or patients on dialysis therapy;
• Various correctable secondary causes of cardiac insufficiency including hyperthyroid heart disease, anaemic heart disease, uncorrected congenital heart disease; severe valvular heart disease (including severe stenosis or closure of organic aortic and mitral valves);
• Patients with indications for pacemaker implantation but have not received a pacemaker implant;
• Patients with chronic obstructive pulmonary disease accompanied by type II respiratory failure.
• Patients who cannot understand and sign an informed consent form.
• Patients with mental illness, pregnant women, and other special populations.