A case is reported of survival following acute superior mesenteric artery occlusion in which endarterectomy led to recovery of gut of doubtful viability and enabled a useful and significant portion of the gut to be retained.Acute superior mesenteric artery occlusion with gangrene of the gut has shown a high mortality and few cases have been reported of a successful outcome following surgery. The interest in this case is that following surgery the patient survived and the portion of gut retained was of sufficient proportions to maintain the patient in a satisfactory state of nutrition.
CASE REPORTAn elderly man of 77 years presented as an acute admission with abdominal pain which began gradually four hours prior to admission and by the time of admission was severe and unremitting. The pain was midline and periumbilical in distribution and was accompanied by severe vomiting. He had had a normal bowel action that morning. He said that he had occasionally complained of stomach pains and that this had shown no relationship to meals, but he was a poor historian and it was doubtful whether his history was entirely reliable. He had had previous good health and no previous admission to hospital, this was confirmed by his family.On examination he was a thin elderly man who was obviously in very severe abdominal pain. Despite this he had a remarkable scarcity of signs on abdominal palpation. There was some degree of guarding which was considered to be voluntary and it was possible to palpate beyond this without further distressing the patient. The absence of tenderness was also noteworthy. There was no abdominal distension. Bowel sounds were present. Rectal examination revealed a moderate degree of faecal impaction, but was otherwise unrevealing. Investigations X-Ray abdomen with erect and supine films showed one fluid level in the erect film to the right of the midline.Haemoglobin was 14.9 grams. Evaluation of signs and symptoms was difficult but in the presence of abdominal pain which did not improve with analgesics and a significant fluid level laparotomy was thought to be justified and was undertaken five hours following admission. at FLORIDA INTERNATIONAL UNIV on June 12, 2015 ang.sagepub.com Downloaded from 219 FIG. 1. (A) Atheroma occluding artery distal to middle colic branch artery. (B) Definitely viable gut. (C) Doubtful viable gut. (D) Gangrenous gut. (E) lst Jejunal branch artery. at FLORIDA INTERNATIONAL UNIV on June 12, 2015 ang.sagepub.com Downloaded from 220Operative findings The small bowel was found to be non viable, and gangrenous along most of the small intestine and ascending colon with a clear line of demarcation at the hepatic flexure. Non viable gut extended proximally to an area of doubtful viability the extent of which was uncertain. Pink normal gut was present in a segment of less than five feet from the duodeno-jejunal flexure.The peritoneal cavity contained foul smelling cloudy fluid and there was moderate peritonitis.The superior mesenteric artery was located and found to be completely occluded...