Peripheral Vascular Disease
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þ Arterial Embolism vs. Arterial Thrombosis
 - Arterial embolism is best managed by emergency Fogarty catheter
   embolectomy.  Rarely has good collaterals.
 - However, in-situ thrombosis causing non-limb- threatening ischemia is best
   managed non-operatively with heparinization and possibly intraarterial
   thrombolytic therapy. Surgical management in these cases often aggravates
   the situation.  Usually has good collateral circulation.

þ Pseudoclaudication
 - Pseudoclaudication is pain down the lateral aspect of the leg, similar to
   that of claudication in that it occurs with ambulation.  Unlike true
   claudication which is due to vascular insufficiency, pseudoclaudication is
   the result of neurologic compression from spinal stenosis causing
   stretching of the sciatic nerve.
 - True claudication from vascular insufficiency can be differentiated from
   pseudoclaudication from spinal stenosis via the stoop test.  The patient
   with true claudication will rest when pain occurs, while the patient with
   pseudoclaudication will try to keep walking by stooping or flexing the
   spine to alleviate pain from sciatic nerve stretch.