Arterial disease is defined by the presence of constrictions in the arteries. PAD is sometimes referred to as “window shopper’s disease”, since patients frequently are forced to stop because of exercise-related pains in the legs. Patients suffering from peripheral arterial disease are up to three times more likely to suffer a heart attack or a stroke. The increased risk does not only apply to symptomatic patients, but also to patients that have asymptomatic constrictions. It is said that PAD may reduce the life expectancy by around 10 years, with heart attack and stroke being the most frequent causes of death.