arterial plethysmography

arterial plethysmography

A test that measures the systolic BP of a normal extremity compared to an upper extremity, detecting an arterial block in the lower extremities Ref range < 20 mm Hg difference in systolic BP between the upper and lower extremities Abnormal value > 20 mm Hg occurs in arterial occlusive disease or arterial blockage. See Plethysmography.