Heart failure occurs when the heart can't pump blood as well as it should. It can affect either the left side of the heart (left-sided heart failure) or the right side (right-sided heart failure).

Heart failure happens when the heart is unable to pump blood around the body efficiently. The most common symptoms of heart failure are shortness of breath, fatigue, cough, and general weakness.

Heart failure is when the heart does not pump enough blood around the body. Biventricular heart failure is when chambers on both sides of the heart, known as ventricles, are affected. Doctors classify ...