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Abstract
The aim of our study is to asses the efficiency of pulse oximeter as a screening tool of peripheral arterial disease.
-Our study enrolled 150 patients, 50 patients above age of 60 year without
symptoms of PVD, 50 asymptomatic patients with low ABI and 50 patients
having symptomatic PVD.
-Duplex study of lower limbs, ABI measurement and oxygen saturation difference between index finger and toe were done to every patient.
-We considered abnormal pulse oximerter of the toes as a SaO2 value of more than 2% lower than the fingers value or a decrease of more than 2% on elevation of the leg (decrease from the value at the supine position),
abnormal ABI < 0.9.
-We found good correlation between pulse oximerter result and ABI as it can detect (82.8%) of diseased limbs detected by ABI and (86.7%) of normal limbs detected by ABI.
-Pulse oximerter seems to be valuable since it can be performed in outpatient clinics and handle large numbers of patients in a short time and avoid the problem of media sclerosis.
-We found that pulse oximeter was highly sensitive (85%) to detect lower limb ischemia detected by duplex also it was highly specific (96.4%) to exclude lower limb ischemia excluded by duplex.