Limb ischaemia can have the symptoms of low pulse to no pulse in the limb, pale color in the limb, cold limbs, paralysis or a burning, tingling feeling. These symptoms should be communicated to your doctor immediately to avoid gangrene.
There are many tests that can be run to determine the area of problem and possible mitigation.
The treatment and prognosis is on a case by case issue. If an area remains untreated and gangrene sets in, amputation may be a result.