title: Emergency non-ruptured abdominal aortic aneurysm.
abstract: OBJECTIVE
  To investigate symptoms and early mortality (<30 days) following open surgery for emergency, symptomatic non-ruptured abdominal aortic aneurysm (AAA).
  
  
  METHODS
  Retrospective cohort study.
  
  
  METHODS
  During the period 1983-1994, 129 patients had an emergency admission, followed by surgery, for symptomatic non-ruptured AAA. Sixty-one received surgery within 24 h of admission and 68 received surgery more than 24 h after admission (median 135 h, inter-quartile range: 51-239 h). During the same period 239 patients had elective surgery for non-ruptured AAA. Early mortality (<30 days), symptoms and co-morbidities were recorded. Data were retrieved from the patient records.
  
  
  RESULTS
  Mortality (30 days) was 18% in the 61 patients having surgery within 24 h of emergency admission for non-ruptured AAA. Mortality following either delayed surgery (semi-elective) after emergency admission or elective surgery was 4.2% (p=0.0002). Four out of 11 patients who died within 30 days following an acute operation had previously been declared unfit for elective surgery. One additional emergency patient had been found unfit for open surgery, but survived a delayed operation.
  
  
  CONCLUSIONS
  The high mortality rate of patients with non-ruptured, symptomatic AAA undergoing surgery within 24 h of admission appears to be influenced by several factors, including co-morbidities and the acute operation. We propose that the 30-day mortality for non-ruptured AAA should be reported in two categories: mortality rate for elective surgery and mortality for surgery performed within 24 h of emergency admission. The term 'emergency non-ruptured' is a suitable term for the latter group.
authors.affiliation: Department of Surgery, University Hospital of Trondheim, N-7006 Trondheim, Norway.
authors.forename: E S
authors.initials: ES
authors.lastname: Haug
authors.forename: P
authors.initials: P
authors.lastname: Romundstad
authors.forename: P
authors.initials: P
authors.lastname: Aadahl
authors.forename: H O
authors.initials: HO
authors.lastname: Myhre
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000453:epidemiology / Q000401:mortality* / Q000601:surgery*; D015897:Comorbidity; D017558:Elective Surgical Procedures; D004630:Emergencies; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D012307:Risk Factors