The purpose of this study is to determine the effect of General versus Local Anaesthesia on muscle and cerebral oxygenation under EVAR-treatment in a prospective unblinded randomised controlled trail.

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