Six Ps of critical limb ischemia (CLI) Classical clinical presentation of acute limb ischemia has been described as Six Ps of critical limb ischemia (CLI): [1] Pale Painful
May-Thurner syndrome (Iliac vein compression syndrome) May-Thurner syndrome denotes iliac vein compression by the crossing iliac artery at the iliocaval junction [1]. Usually it is the left iliac