Muscle and Cerebral Oxygenation Under EVAR of AAA: GA vs LA

Inclusion Criteria: * 18 years or older * Scheduled procedure Exclusion Criteria: * allergies for used local anaesthesia * have had vascular surgery before in the femoral area * the need for thromboendarterectomy in common femoral artery * the need for aortouniiliac stent-graft with cross-over bypass * severe back pain * expected time of surgery more than 1.5 hour * cognitive dysfunction making cooperation during procedure impossible * Femoral amputee