What is the treatment for severe peripheal vascular occlusive disease?

The long-term preservation of life and limb requires aggressive management of peripheral vascular disease. The most important factors in long-term disease management include complete smoking cessation, and accurate control of diabetes and high blood pressure. Blood cholesterol levels should be carefully controlled with dietary modifications and medications if necessary. A regular walking program is an important component of long-term health. Once peripheral arterial occlusions have advanced to the degree that patients are truly disabled or have limb-threatening lesions, invasive management of their peripheral vascular disease is indicated. Generally, patients undergo arterial imaging with either magnetic resonance angiography or standard contrast angiography. Based on the degree of arterial occlusion and the patient鈥檚 anatomy, they may be offered several treatment options. Whenever applicable, patients are treated with less invasive balloon angioplasty of the occluded vessels, with or without arterial stent placement. In cases where the blockages are too diffuse or severe, open surgical bypass operations are performed to restore circulation to the distal leg and foot. An individualized treatment plan is designed for each patient depending on their degree of symptoms, overall medical status, and the anatomy of their arterial blockages.
As in all cases requiring detailed medical information, the advice of a doctor specialising in the condition you are enquiring about should be obtained.
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Matador 89

If the patient is symptomatic and IF they are healthy enough, surgery.

The type and extent of the surgery depends on the exact location of the disease. (one leg, both legs, aorta, etc)