Heart disease is one of a number of different diseases which afflict the heart. The most common heart diseases include: * Coronary heart disease, the end result of the accumulation of atheromatous plaques within the walls of the arteries that supply the myocardium * Ischaemic heart disease, a disease characterized by reduced blood supply to the heart. * Cardiovascular disease, a class of diseases that involve the heart and/or blood vessels (arteries and veins).Implies under this c...

A cardiac arrhythmia, also called cardiac dysrhythmia, is a disturbance in the regular rhythm of the heartbeat. Several forms of cardiac arrhythmia are life-threatening and a medical emergency. A rhythm of the heart at a rate of more than 100 beats/minute is considered a tachycardia.A more serious variety of arrhythmia is known as fibrillation. Fibrillation occurs when the heart muscle begins a quivering motion instead of a normal, healthy pumping rhythm. Atrial fibrillation is the quivering, ch...