Anaesthesia for Endoluminal Repair of Abdominal Aortic Aneurysms

Abstract

An audit of 100 patients undergoing elective abdominal aortic surgery either by open aortic repair (OAR group 50 patients) or endovascular aortic repair (EAR group 50 patients) was undertaken to document changes in anaesthetic technique and perioperative outcome. The data for the OAR group was collected retrospectively and that for the EAR group prospectively. Combined general anaesthesia and thoracic epidural anaesthesia was used in 44 of the OAR group whereas lumbar central neural blockade alone was used in 47 of the EAR group. The major differences between the two groups were that intraoperative blood loss was significantly less in the EAR group (OAR 1674±1008 ml, EAR 459±350 ml, P<0.001) and that no patient in the EAR group required admission to the Intensive Care Unit (ICU), whereas ICU time for the OAR patients was 29±22 hours. Hospital stay was also significantly different between the two groups (OAR 13±6 days, EAR 5±3 days, P<0.001). Major complications occurred in 20 patients in the OAR group but only 4 patients in the EAR group (P<0.001). EAR reduces blood loss, the requirement for ICU admission, and hospital stay. Central neural blockade is a satisfactory anaesthetic technique for EAR.