
The life-center of the body, the heart is the hardest working muscle in our bodies, responsible for pumping blood throughout the body. Just like any other muscle, it can be subject to fatigue, especially if it has been weakened by a number of cardiovascular diseases.
When damaged enough, a patient's only option may be a heart transplant. This usually follows conditions such as coronary artery disease, cardiomyopathy or weakening of the heart muscle.