Predictors of Diabetic Foot Outcome in Chronic Kidney Disease Patients

"Normal ABI ranges from 1.0 - 1.4~* Pressure is normally higher in the ankle than the arm.~* Values above 1.4 suggest a noncompressible calcified vessel.~* In diabetic or elderly patients, the limb vessels may be fibrotic or calcified. In this case, the vessel may be resistant to collapse by the blood pressure cuff, and a signal may be heard at high cuff pressures. The persistence of a signal at a high pressure in these individuals results in an artifactually elevated blood pressure value.~* An value below 0.9 is considered diagnostic of PAD.~* Values less than 0.5 suggests severe PAD.~* Individuals with such severe disease may not have sufficient blood flow to heal a fracture or surgical wound; they should be considered for revascularization if they have a non-healing ulcer."