Skin Perfusion Pressure

Abstract

Skin perfusion pressure (SPP) is a noninvasive diagnostic test that quantitatively analyzes the local blood flow in an area of interest. SPP is measured using a laser Doppler sensor that is placed under an inflated/deflated blood pressure cuff and is able to detect red blood cell motion in the microcirculation as the cuff pressure passes through systole. The SPP results can be used in conjunction with physiological arterial testing to aid in the diagnosis of critical limb ischemia. The examination also can be a guide in determining the most advantageous level for amputation in patients with critical limb ischemia. SPP provides a measure of the potential for healing or progression of a wound without revascularization.