Ischemic Pain Control With Analgesic Methods Clinical Trial

This project is one of four components of a thematic project that aims to evaluate the use of ultrasound in regional blocks, called "Use of ultrasound in regional blocks and injections for the treatment of acute and chronic pain." It will evaluate quantitative and qualitative control of ischemic pain in the lower limbs in patients with peripheral arterial occlusive disease through continuous sciatic nerve block by perineural catheter, popliteal approach, compared to systemic analgesia based on opioids.