Ultrasound-guided Lumbar Erector Spinae Plane Block in Patients Undergoing Lower Limb Vascular Surgery

the investigatots hypothesized that by injection a larger volume and higher concentration of local anesthetic in lumbar erector spinae plane block could result in successful anesthesia in patient undergoing lower limb vascular surgery. ultrasound-guided lumbar erector spinae plane block in patient undergoing lower limb vascular surgery with higher concentration of local anesthetic to asses it is efficacy as a sole anesthetic technique, it is safety and efficacy in maintaining intraoperative hemodynamics, intra and postoperative pain control .