Some patients with heart failure grade 3 can live for 30 years and some cannot. Heart failure is heart failure, also known as cardiac insufficiency. Patients with heart failure grade 3 may experience symptoms such as palpitations, wheezing, angina, etc. even if they engage in general physical activities, which makes their condition relatively serious. How long such a patient can live is related to many factors, such as the patient’s age, the severity of the underlying disease, and the degree of cooperation with treatment. If a young patient has acute heart failure grade 3, after active rescue treatment, the heart function can still be restored to grade 1-2, and the patient can live more than 30 years. However, for elderly patients with chronic heart failure grade 3, it is difficult to be reversed by drug therapy, at this time the patient’s life expectancy is often within 5 years, and very few can live for 30 years. For patients with heart failure grade 3, it is recommended to take active treatment to control the progression of the disease and improve the quality of life. On the basis of active treatment of the primary disease, cardiotonic, diuretic, nutritive myocardial medication should be given, and at the same time, dietary and lifestyle interventions should be combined to prolong the patient’s survival period and reduce the mortality rate as much as possible. If you suffer from heart failure, you should seek medical attention in time and follow the doctor’s instructions.