Coronary disease, in other words the stenosis (the narrowing or blockage) created in the heart’s arteries (which are called coronary arteries), is the most common heart disease in the Western world and in Greece. The main factors contributing to the huge increase in coronary disease cases in our days are, in order of priority, smoking, high cholesterol levels, high blood pressure and high blood sugar levels.
The heart is a pump that contracts and relaxes without stop 60 to 100 times a minute, sending blood with oxygen and various other nutrients to all the organs in the body. In order to function normally it needs an electrical impulse that is generated before each contraction (60 to 100 times a minute). This impulse is generated at a specific point in the heart (the sinus node) and is transmitted to its different parts via a specialized electrical circuit that serves and reaches all these parts.