Tue. Jun 18th, 2024

Peripheral artery disease is caused by arteriosclerosis, or “hardening of the arteries.” This problem occurs when fatty material (plaque) builds up on the walls of your arteries and makes them narrower. The walls of the arteries also become stiffer and cannot widen (dilate) to allow greater blood flow when needed.

Arteriosclerosis of the extremities

As a result, the muscles of your legs cannot get enough blood and oxygen when they are working harder (such as during exercise or walking). If PAD becomes severe, there may not be enough blood and oxygen, even when the muscles are resting.

Peripheral artery disease is a common disorder. It most often affects men over age 50, but women can have it as well.

People are at higher risk if they have a history of:

  • Abnormal cholesterol
  • Diabetes
  • Heart disease (coronary artery disease)
  • High blood pressure (hypertension)
  • Kidney disease involving hemodialysis
  • Smoking
  • Stroke (cerebrovascular disease)

Symptoms

The main symptoms of PAD are pain, achiness, fatigue, burning, or discomfort in the muscles of your feet, calves, or thighs. These symptoms usually appear during walking or exercise, and go away after several minutes of rest.

At first, these symptoms may appear only when you walk uphill, walk faster, or walk for longer distances.

Slowly, these symptoms occur more quickly and with less exercise.

Your legs or feet may feel numb when you are at rest. The legs also may feel cool to the touch, and the skin may look pale.

When peripheral artery disease becomes severe, you may have:

  • Impotence
  • Pain and cramps at night
  • Pain or tingling in the feet or toes, which can be so severe that even the weight of clothes or bed sheets is painful
  • Pain that is worse when you elevate the legs and improves when you dangle your legs over the side of the bed
  • Skin that looks dark and blue
  • Sores that do not heal
  • Exams and Tests
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During an exam, the health care provider may find:

  • A whooshing sound when the stethoscope is held over the artery (arterial bruits)
  • Decreased blood pressure in the affected limb
  • Weak or absent pulses in the limb

When PAD is more severe, findings may include:

  • Calf muscles that shrink (wither or atrophy)
  • Hair loss over the legs, feet, and toes
  • Painful, non-bleeding sores on the feet or toes (usually black) that are slow to heal
  • Paleness of the skin or blue color in the toes or foot (cyanosis)
  • Shiny, tight skin
  • Thick toenails
  • Blood tests may show high cholesterol or diabetes.

Tests for PAD include:

  • Angiography of the arteries in the legs (arteriography)
  • Blood pressure measured in the arms and legs for comparison (ankle/brachial index, or ABI)
  • Doppler ultrasound exam of an extremity
  • Magnetic resonance angiography or CT angiography
  • Treatment

Things you can do to control PAD include:

Balance exercise with rest. Walk or do another activity to the point of pain and alternate it with rest periods. Over time, your circulation may improve as new, small (collateral) blood vessels form. Always talk to the doctor before starting an exercise program.

Stop smoking. Smoking narrows the arteries, decreases the blood’s ability to carry oxygen, and increases the risk of forming clots (thrombi and emboli).

Take care of your feet, especially if you also have diabetes. Wear shoes that fit properly. Pay attention to any cuts, scrapes, or injuries, and see your doctor right away. Tissues heal slowly and are more likely to get infected when there is decreased circulation.

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Make sure your blood pressure is well-controlled.

If you are overweight, reduce your weight.

If your cholesterol is high, eat a low-cholesterol and low-fat diet.

Monitor your blood sugar level if you have diabetes, and keep it under control.

Possible Complications

  • Blood clots or emboli that block small arteries
  • Coronary artery disease
  • Impotence
  • Open sores (ischemic ulcers) on the lower legs
  • Tissue death (gangrene)
  • The affected leg or foot may need to be amputated

By Evelyn Smith

Evelyn Smith is a passionate advocate for a healthy vegan lifestyle. She is dedicated to promoting plant-based living and sharing her knowledge and experiences with others. Evelyn believes that a vegan lifestyle not only benefits personal health but also contributes to a more sustainable and compassionate world. With a background in nutrition and wellness, she strives to inspire and educate individuals on the benefits of embracing a vegan diet and lifestyle. When she's not busy spreading the vegan message, Evelyn enjoys exploring new vegan recipes, practicing yoga, and connecting with like-minded individuals on her website, Healthy Vegan Style.

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