Heart failure often develops after other conditions have damaged or weakened your heart. Over time, the heart can no longer keep up with the normal demands placed on it to pump blood to the rest of your body. The main pumping chambers of your heart (the ventricles) may become stiff and not fill properly between beats. Also, your heart muscle may weaken, and the ventricles stretch (dilate) to the point that the heart can't pump blood efficiently throughout your body. The term "congestive heart failure" comes from blood backing up into — or congesting — the liver, abdomen, lower extremities and lungs.
Heart failure can involve the left side, right side or both sides of your heart. Typically, heart failure begins with the left side — specifically the left ventricle, your heart's main pumping chamber.
Even though it may sound like it, heart failure does not necessarily mean that the heart has failed. Heart failure is a serious condition in which the heart is not pumping blood around the body efficiently. The patient's left side, right side, or even both sides of the body can be affected. Symptoms will depend on which side is affected and how severe the heart failure is - symptoms can be severe.
According to Medilexicon's medical dictionary, heart failure is "1. inadequacy of the heart so that as a pump it fails to maintain the circulation of blood, with the result that congestion and edema develop in the tissues; 2. resulting clinical syndromes include shortness of breath, pitting or nonpitting edema, enlarged tender liver, engorged neck veins, and pulmonary rales in various combinations.".
The number of elderly people developing heart failure is increasing in industrial countries, especially in the USA. The number of older patients hospitalized for heart failure in the US has more than doubled in the last 27 years, according to this report. Another US study found that Afro-Americans are 20 times more likely to develop heart failure before the age of 50 years compared to Caucasian-Americans. The American Heart Association says that American adults with severe heart failure see almost three times as many Medicare providers each year compared to a typical beneficiary.
What is salt? How much salt should I eat? Heart failure is the leading cause of death in South-East Asia. Researchers report that a variant of a gene that increases the risk heart failure seven-fold is most common amongst people in South East Asia.
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