What is the relationship between heart disease and heart failure

People who have heart disease is not certainly have heart failure? There are many heart patients confuse the issue. To this end, the author specifically ask the Cardiology Department, Peking University First Hospital, Professor Gao Wei.
Failure, congestive heart failure, and 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 for patients there will be difficulty in breathing, the symptoms decreased exercise tolerance; On the other hand, cardiac output reduced to around back affected by the blood, then there will be bleeding patients showed lower extremity edema or liver, digestive tract, such as congestion.
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 patients need time is not the same. In other words, after heart disease also had a compensatory period, that is a function of cardiac decompensation stage. In the adaptation period, although heart disease patients, for example, to the hospital for an examination discovered a heart murmur or a big heart, it is only that he has heart disease, but his heart function may also in normal conditions. If the heart is on the basis of incentives, it can enable the development of decompensated heart from the decompensated, or heart failure occurred. In terms of incentives, the most important is infection.
Whether the patient had been diagnosed with congestive heart failure after entering 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 cause of the original heart disease; on the other hand, the judgement of heart failure there is a process in itself. Clinical usually on the New York Heart Association in accordance with the development of a standard, which is primarily based on the patient's tolerance campaign to determine cardiac function. According to this standard, the cardiac function normally divided into four: an unrestricted physical activity is the decompensated stage two, three, already is discompensation; to four heart function, is a very serious heart failure, physical activity almost completely lost, also in the rest of symptomatic, which is a very serious heart failure. Four in the state, a considerable risk patients, the mortality rate was very high. Early treatment of heart failure must be to control the development of the disease.