How long a patient with left heart failure will live cannot be generalised, it depends on many factors related to the severity of the left heart failure and the severity and severity of the cause, compliance with treatment and so on.
In severe cases of heart failure, the five-year survival rate is usually only about 50%, and some patients with severe heart failure may die within a year. However, with standardised treatment, compliance with medication, attention to a light diet and avoidance of overexertion, patients will also have a longer survival period.