MORTALITY SCORES IN SURGICAL CORRECTION OF ABDOMINAL AORTIC ANEURYSM IN RUPTURE.

Introduction: Ruptured abdominal aortic aneurysm's treatment relies on the emergent surgery, considering preoperative prognosis. There are several scores that estimate perioperative mortality of ruptured abdominal aortic aneurysm, however, the accuracy of such algorithms in some populations remains unknown.

Objective: Compare the prognostic validity of the Weingarten score with the Glasgow Aneurysm Score and the Vancouver Scoring System. Validation of three prognostic ruptured abdominal aortic aneurysms tools for the Portuguese population.

Material And Methods: A retrospective analysis of consecutive patients with ruptured abdominal aortic aneurysm surgically treated, in a peripheral and in a referral hospital between 2012 and 2016 was performed. The 30-day mortality discriminative power was analysed using each score.

Results: 120 patients were included. The mean Glasgow Aneurysm Score was 98.53 ± 19.57, the Vancouver Scoring System was 3.64 ± 1.43. The Weingarten score classified 51 (43.2%) patients as stable and 67 (56.8%) as unstable. The three scores demonstrated some predictive value concerning mortality, although Glasgow Aneurysm Score demonstrated the highest area under the ROC curve (0.74) and the best discriminatory capacity for cut-off points with higher specificity. Neither of the scores demonstrated clinically useful predictive value.

Conclusions: The Weingarten score did not present as a superior prediction model of preoperative mortality in ruptured abdominal aortic aneurysm. None of the scores, even when optimized for a higher specificity, could select which patients will not benefit from surgical intervention. The Glasgow Aneurysm Score was validated for the Portuguese population.