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Noninvasive Assessment of Lower-extremity Hemodynamics in Individuals with Diabetes Mellitus
The timely and accurate noninvasive assessment of peripheral arterial disease is a critical component of a limb preservation initiative in patients with diabetes mellitus. Noninvasive vascular studies can be useful in screening patients with diabetes for peripheral arterial disease. In patients with clinical signs or symptoms, noninvasive vascular studies provide crucial information on the presence, location, and severity of peripheral arterial disease and an objective assessment of the potential for primary healing of an index wound or a surgical incision. Appropriately selected noninvasive vascular studies are important in the decision-making process to determine whether and what type of intervention might be most appropriate given the clinical circumstances. Hemodynamic monitoring is likewise important after either an endovascular procedure or a surgical bypass. Surveillance studies, usually with a combination of physiologic testing and imaging with duplex ultrasound, accurately identify recurrent disease before the occurrence of thrombosis, allowing targeted reintervention. Noninvasive vascular studies can be broadly grouped into three general categories: physiologic or hemodynamic measurements, anatomical imaging, and measurements of tissue perfusion. These types of tests and suggestions for their appropriate application in patients with diabetes are reviewed. (J Am Podiatr Med Assoc 100(5): 406–411, 2010)
