<prompt> Ankle-brachial pressure index ABPIless than 0.3 indicatesNormal valueClaudicationRest painImminent necrosis  <response>: Ankle-brachial pressure index ABPI is the ratio of systolic pressure at the ankle to that in the ipsilateral arm. 1.3Calcified, incompressible aeries that are often found in diabetic patients.0.9 - 1.3 Normal 0.9 Claudication 0.5Rest pain 0.3 Imminent necrosisRef: Bailey and love pg: 945 