What is the relationship between heart disease and heart failure?

People who have heart disease is not certainly have the heart failure? There are many heart patients confusion this issue. To that end, the authors specifically ask the First Hospital of Beijing University Cardiology Department, Professor Gao Wei. Heart failure as heart failure can lead to cardiac contractile function or diastolic dysfunction. On the one hand, due to reduced cardiac output to surrounding tissue perfusion bad, can not meet the metabolism of blood required, the patient will appear breathing difficulties, the symptoms decreased exercise tolerance; On the other hand, because of reduced cardiac output, the return of blood to be around a certain impact on the patient at this time there will be bleeding, lower extremity edema or for the performance of the liver, digestive tract congestion, and so on. Some patients had heart disease, say their heart failure, is not such a thing. Heart to heart failure occurred there is a process, each situation is different because of the patient's time is not required by the same. In other words, there had a heart attack after the compensatory period, that is a decompensated heart function stage. In the compensatory period, the patient has a heart attack, for example to the hospital for an examination discovered a heart murmur or a big heart, it is only that he has heart, but his heart function may also in normal conditions. If the heart again on the basis of a number of incentives, then it will enable the development of decompensated heart from the decompensated, or heart failure occurred. In clinical terms of incentives, the most important is infection. Whether the patient has been diagnosed with heart failure, it has entered a dangerous state? Professor Gao, the patient has heart failure, but different patients impaired cardiac function to varying degrees. On the one hand, depends on the original heart disease etiology; On the other hand, the judgment of heart failure itself also needs a process. Clinical usually are based on the New York Heart Association developed a standard, which is primarily based on the patient's tolerance of exercise to determine cardiac function. According to this standard, the cardiac function normally classified into four classes: unrestricted physical activity level is the decompensated stage; 2, No. 3, had been missing compensatory; 4 to cardiac function, that is a very serious heart failure, physical activity almost completely lost, when the rest have symptoms , which is a very serious heart failure. In four of the state, a considerable risk patients, the mortality rate was very high. Early treatment of heart failure must be to control the disease's development.