- Patients with objective evidence of peripheral vascular disease (resting ankle pressure < 70 mmHg and/or toe pressure < 50 mmHg, and/or resting ankle-brachial index (ABI) < 0.4 and/or resting toe-brachial index (TBI) < 0.3 and/or metatarsal pulse volume recording (PVR) flat or barely pulsatile) in the diseased limb on two consecutive examinations performed at least 1 week apart.