What is a Peripheral Artery Disease?
Peripheral Artery Disease is a disorder of the circulatory system in the body’s limbs. It occurs when the body’s arteries narrow from arteriosclerosis or “hardening of the arteries.” Plaque, the result of arteriosclerosis, builds up in the artery resulting in a narrower path for blood flow, which equates to inadequate blood and oxygen flow through the body. People who suffer from Peripheral Artery Disease often have problems with their legs. The leg’s muscles have to work harder to support the body with less oxygen and blood flow.
What causes Peripheral Artery Disease?
Peripheral Artery Disease is caused by the build-up of plaque as a result of arteriosclerosis. The buildup of plaque on the wall of the artery causes a reduction in blood flow. When arteriosclerosis occurs in the arteries that supply blood to the limbs (especially the legs and feet) it refers to peripheral artery disease. Peripheral Artery Disease most commonly affects men over 50 years of age. Men and women who have or have had the following are at a higher risk of the disorder.
- Body Mass Index over 30 (obesity)
- Coronary Artery Disease
- Family history of Peripheral Artery Disease
- High cholesterol or high blood pressure
It is important to note, that people who smoke or who are diabetic have a greater chance of developing Peripheral Artery Disease. Both of these factors lead to reduced blood flow.
What are the symptoms of Peripheral Artery Disease?
The severity of symptoms ranges from person to person. Early onset of Peripheral Artery Disease may not cause any symptoms. However, those with more severe cases complain of pain in the lower extremities, thighs, legs and feet. Generally, this pain begins during exercise and then goes away within a few minutes of rest but as the disorder advances this pain may be present during inactivity.
The most common symptoms include:
- Cramps in the hip, thigh, calf or foot
- Weakness or numbness in the leg
- Coldness in the leg
- Color change in the skin on the leg
- Weak pulse in the leg or foot
- Sores on the leg or foot that do not heal
How is Peripheral Artery Disease diagnosed?
Exempla Rocky Mountain Cardiovascular Associates identifies Peripheral Artery Disease with some of the following tests:
- Diagnostic Tests
- Peripheral Angiography
- CT Angiography
- Ankle Brachial Index/ pulse volume recordings and segmental pressures
How is Peripheral Artery Disease treated?
Treatments for Peripheral Artery Disease are two-fold. The first is to manage symptoms and the second is to slow down or stop the progression of the disorder. If you smoke, the single most important thing you can do is to quit.
Lifestyle treatments include:
- Quitting smoking
- Exercising and modifying your diet in an effort to lose weight (or decrease your body mass index)
- Alternating exercise and rest. Over time, circulation may improve as new blood vessels form
- Take care of your feet, especially if you are diabetic – wear shoes that fit properly and make sure to treat all cuts and scrapes right away
Medication treatments include:
- High-blood pressure medicine
- Cholesterol lowering medicine
- Medicine to control blood sugar
- Medicine to prevent blood clots like Aspirin or clopidogrel (Plavix)
- Medicine to provide symptom-relief like cilostazol (Pletal), which increases blood flow to the limbs by enlarging the artery
Cardiac Catheterization Lab treatments include:
- Stent placement