Background: To compare the regional anesthesia method (combination of SCPB and DCPB), applied by conventional method or by USG guidance (vertebral loop technique) for CEA in terms of perioperative efficacy, patient-surgeon comfort, and complications. Prospective, randomized, double-blinded study. ASA grades II-III, > 18 years and > 55 kg patients scheduled for elective CEA under the combination of SCPB and DCPB included the study.

Results: There was no statistically significant difference between the groups in terms of demographic data, the number of C3 cervical block and superficial block application attempt, C2 and C4 cervical block procedural time, the time between completion of the block and the start of incision, total surgical time, sensory block formation time, other hemodynamic parameters except basal systolic blood pressure,perioperative additional drug applications, perioperative NADS scores and postoperative surgeon and patient satisfaction scores. There was a statistically significant difference between 2 groups in terms of the number of C2 and C4 cervical block application attempts, C3 cervical block procedure time, superficial cervical block time, total cervical block procedure time and complications.

Conclusions: We thought that combined superficial and deep cervical plexus blocks performed with USG are applicable and much safer anesthesia management compared to the conventional method for carotid endarterectomy.