To ascertain the ABI, the systolic hypertension (the highest number of the blood pressure level measurement) of the ankle is divided because of the systolic blood pressure of the arm.  Structural abnormalities: At times irregularities in the blood vessel anatomy might cause narrowing, contributing to PVD. The indicators of PVD https://www.sgvascularctr.com/types-of-treatments-for-vascular-diseases/