Heart failure occurs when the heart fails to pump blood around the body and organs for oxygen and nutrients. As blood moves through the heart and body at a slower rate, pressure in the heart increases. The chambers of the heart stretch to hold more blood to be able to pump through the body. This helps the blood to move but eventually the heart muscle walls weaken, unable to pump blood efficiently. The kidneys, in response cause the body, to retain fluids. The leakage of fluid in the tissues and the organs congests the heart, leading to heart failure.
Any of the following conditions can be responsible for weakening the heart and causing heart failure.
1. Coronary artery disease: this is a disease of the arteries supplying blood and oxygen to the heart that causes decreased blood flow to heart muscle. If the arteries get blocked or narrowed (due to the buildup of fatty deposits), the heart fails to get oxygen and nutrients, which may eventually lead to heart failure.
2. Heart attack: if the artery becomes suddenly blocked or the plaques formed by fatty deposits rupture, it can lead to a heart attack. This happens due to the formation of a blood clot which may block blood flow to an area of heart muscle.
3. High blood pressure: high blood pressure puts an extra strain on the heart for it to work harder to circulate blood throughout the body. As a result, the heart muscle may become stiff or weak to effectively pump blood.
5. Other diseases: chronic diseases like diabetes, HIV, hyperthyroidism or a buildup of iron or protein can also lead to heart failure. If you wish to discuss about any specific problem, you can consult a Cardiologist.