Resistance Index as a Prognostic Factor for Patency in Distal Lower Limb Arterial Revascularization.

Background: Critical limb ischemia (CLI) of the lower limbs (LLs) is a severe condition caused by peripheral arterial obstructive disease (PAOD). Surgical planning for CLI requires the study of limb circulation, and the vascular resistance index (RI) measured by Doppler ultrasound (US) has been used to aid in surgical decision-making. The objective is to correlate the RI of recipient arteries with the patency of LL revascularization surgeries in patients with CLI.

Correlation between the vascular resistance index and arteriography for assessment of the distal arterial bed in chronic limb threatening ischemia.

Background: Patients with chronic limb threatening ischemia (CLTI) of the lower limbs (LL) undergo arteriography for revascularization surgery planning. Doppler ultrasound (DU) is non-invasive and can provide information about the distal arteries through measurement of the resistance index (RI).

Objectives: To correlate the Rutherford Angiographic Classification with the RI for assessment of the distal arterial bed of the LL.