title: Improved outcome by identification of high-risk nonocclusive mesenteric ischemia, aggressive reexploration, and delayed anastomosis.
abstract: BACKGROUND
  The factors associated with outcome of patients with nonocclusive mesenteric ischemia are poorly defined.
  
  
  METHODS
  Over a 7-year period, 34 consecutive patients with nonocclusive mesenteric ischemia were identified.
  
  
  RESULTS
  The mean age of the study patients was 63 years (range 31 to 94); 21 of 34 (62%) were men. The mean delay in diagnosis was 31 hours (range 7 hours to 6 days). Seven of 34 (21%) underwent preoperative visceral arteriography. Two of these 7 required surgery, and both died as a result of intestinal infarction. The remaining 27 had the diagnosis made at celiotomy. Among the 29 who were explored, 16 of 29 (55%) had intestinal infarction. Twenty-one of 29 (72%) had segmental bowel injury whereas 8 of 29 (28%) had massive injury. Among those with segmental infarction, primary anastomosis was performed in 12 of 21 patients (57%); 5 of the 12 (42%) died. Nine of 21 patients (43%) underwent delayed anastomosis; 2 of the 9 (22%) died. No patient with massive injury underwent primary anastomosis. Second-look laparotomy was performed on 22 of 29 (76%). Eleven of those 22 (50%) had a further bowel resection. Overall, 16 of 29 (55%) who underwent surgery for nonocclusive mesenteric ischemia are alive.
  
  
  CONCLUSIONS
  Improved survival from nonocclusive mesenteric ischemia is dependent upon the identification of high-risk groups, aggressive reexploration, and delayed intestinal anastomosis.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000714:Anastomosis, Surgical; D005260:Female; D006801:Humans; D007238:Infarction / Q000209:etiology; D007422:Intestines / Q000098:blood supply* / Q000601:surgery; D007511:Ischemia / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery*; D008297:Male; D008641:Mesenteric Vascular Occlusion / Q000601:surgery; D008643:Mesentery / Q000098:blood supply*; D008875:Middle Aged; D012086:Reoperation; D012307:Risk Factors; D016896:Treatment Outcome; D014661:Vasoconstriction