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  • Title: Emergency surgery of non-ruptured abdominal aortic aneurysm.
    Author: Soisalon-Soininen S, Salo JA, Perhoniemi V, Mattila S.
    Journal: Ann Chir Gynaecol; 1999; 88(1):38-43. PubMed ID: 10230681.
    Abstract:
    BACKGROUND AND AIMS: The pain of an abdominal aortic aneurysm (AAA) is believed to signify rupture, and emergency surgery for symptomatic AAA is a widely accepted practice to prevent rupture. To clarify the benefit of emergency surgery we evaluated the clinical course of emergency treated patients with non-ruptured AAAs. MATERIAL AND METHODS: 110 patients (90 men, mean age 69, range 49-93; 20 women, mean age 75, range 63-89) underwent emergency repair of non-ruptured AAA between 1970 and 1992 at the Department of Thoracic and Cardiovascular Surgery of Helsinki University Central Hospital (HUCH). Survival rates after surgery were analysed using product-limit-survivorship method. The survival rates after age-stratification were compared with those of patients undergone elective surgery (n=599) or emergency surgery because of ruptured AAAs (n=363) during the same period. Risk factors affecting early and late survival rates after operation were analysed by logistic regression analysis and Cox proportional hazard model. RESULTS: Thirty-day operative mortality rates were 18 % (20/110) in the emergency non-ruptured group, compared with 7 % (42/599) in the elective group and 49 % (179/363) in the ruptured group (p<0.05). Thirty day survival rate was not changed among the nonruptured emergency group from 1970 to 1992, whereas the rates of ruptured and elective groups became better during the study period. Late survival rates for 30-day postoperative survivors were clearly reduced among the non-ruptured emergency group, without difference between the emergency operated ruptured and non-ruptured groups. Coronary artery disease was decreasing significantly early and late survival rates after emergency surgery for non-ruptured AAAs (p<0.05, logistic regression and p<0.001 Cox proportional hazard). CONCLUSIONS: Early and late mortality risk is significantly higher (p<0.001) after emergency surgery for haemodynamically stable non-ruptured AAA than after elective surgery, mainly because of coronary artery disease.
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