How Does Hypertrophic Cardiomyopathy Affect the Heart?
It is helpful to be familiar with the structure and function of the normal heart in order to understand the abnormalities in HCM. Fig. 3 shows a normal heart and indicates the heart chambers, valves and the direction of blood flow. The walls of the heart are composed of specialized muscle known as the myocardium. It is this part of the heart which is abnormal in HCM.