Your body also tries to compensate by releasing hormones that make the heart work harder. Over time, these compensatory mechanisms fail and symptoms of heart failure begin to appear. Like an over-stretched rubber band, the heart's ability to stretch and snap back decreases. The heart muscle becomes worn out and is unable to pump blood effectively. This is called congestive heart failure.
Heart failure is a progressive process, even if no new damage occurs to the heart.
In a short time, a heart attack occurs, permanently damaging the heart muscle. The damaged area cannot pump normally, and that leads to heart failure. Symptoms of heart failure are related to the changes that occur to your heart and body. Occurs with exercise or rest or when lying flat in bed. Fluid backs up in the lungs, causing shortness of breath and, often, a hacking cough.