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Review

Emerging drugs in peripheral arterial disease

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Pages 75-90 | Published online: 27 Feb 2006
 

Abstract

Peripheral arterial disease (PAD) is the manifestation of atherosclerotic occlusion within a peripheral vascular bed. This can occur in any noncoronary arterial bed, but PAD most commonly refers to atherosclerosis in the aorto–iliac system and infrainguinal vessels that lead to symptoms in the lower extremities. The disease most often becomes clinically apparent in elderly individuals, commonly presenting as intermittent claudication. More advanced, or multisegmental disease, may present with ischaemic rest pain or tissue loss. Although the limb manifestations of PAD can be disabling, PAD is also a marker of coronary or cerebrovascular atherosclerosis. In fact, ~ 80% of mortality in PAD patients is secondary to a cardiovascular event. In accordance with this, initial medical management of this disease focuses on preventative and risk reduction strategies to minimise the risk of cardiovascular morbidity and mortality. At present, the majority of recommendations with respect to risk reduction therapy in PAD patients are extrapolated from the coronary and cerebrovascular literature. Limb-directed therapy in PAD intends to minimise symptoms and serve as an adjunct to surgical intervention. However, existing data on the efficacy of these agents suggests that they are only partially effective. In addition, the effect of existing nonoperative intervention on the progression of disease has not been completely elucidated. As such, new therapies are under development, which target various goals, including minimising local progression of disease, minimising disability, reducing systemic cardiovascular morbidity/mortality and augmenting the durability of surgical intervention.

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