Classification
Peripheral artery occlusive disease is commonly divided in the Fontaine stages, introduced by René Fontaine in 1954 for ischemia:
- mild pain when walking (claudication), incomplete blood vessel obstruction;
- severe pain when walking relatively short distances (intermittent claudication), pain triggered by walking "after a distance of >150 m in stage IIa and after <150 m in stage II-b";
- pain while resting (rest pain), mostly in the feet, increasing when the limb is raised;
- biological tissue loss (gangrene) and difficulty walking.
A more recent classification by Rutherford consists of three grades and six categories:
- Mild claudication
- Moderate claudication
- Severe claudication
- Ischemic pain at rest
- Minor tissue loss
- Major tissue loss
Read more about this topic: Peripheral Vascular Disease
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