Nasogastric decompression and perioperative nutrition. We recommend optimization of preoperative nutritional status before elective open aneurysm repair if repair will not be unduly delayed. Level of recommendation 1 (Strong), Quality of evidence A (High)

We recommend using nasogastric decompression intraoperatively for all patients undergoing open aneurysm repair but postoperatively only for those patients with nausea and abdominal distention. Level of recommendation 1 (Strong), Quality of evidence A (High)

We recommend parenteral nutrition if a patient is unable to tolerate enteral support 7 days after aneurysm repair. Level of recommendation 1 (Strong), Quality of evidence A (High)