Heart failure (sometimes known as congestive heart failure [CHF]) is a serious condition in which the heart is not pumping efficiently. It is a chronic condition that is the result of other cardiac conditions.
In the late stages of heart failure, the heart is unable to meet the body’s demand for oxygen. In addition, it may cause congestion in the lungs or other problems throughout the body. As a result of the lack of oxygen-rich blood flowing to the body, the heart tries to work harder, which only makes the problem worse.

Conditions that could lead to heart failure include: