Clinical evaluation of patients with suspected arterial occlusion will demonstrate a change in temperature (coolness to touch) along the extremity affected as compared to the unaffected extremity. Furthermore, the bilateral pulse exam will demonstrate a diminished or absent palpable or Dopplerable pulse distal to the site of occlusion in the affected extremity. A CTA can be used to confirm the occlusion, while an urgent vascular surgery or an interventional radiology consult is necessary .