Observing a Decade of Yearly Standardised Surveillance in EVAR-Patients with Ultrasound or CT-Scan: Preliminary Analysis Within 5 Centres

Abstract

dead vs alive patients also in the open repair(p¼0.003) and endovascular treatment subset (P¼0.039). The use of a ROC curve allowed to identify a cutoff point of pH of 7.22, able to distinguish subsets of patients at different risk, with a mortality rate of 85.7% in the pH group 7.22 compared to 45.1% in that with pH > 7.22 (p< 0.001). The multivariate logistic regression model showed that age (p¼0.005, OR¼1.10, 95% CI 1.03-1.18), creatinine 2.05 (p¼0.010, OR¼11.82, 95% CI 1.81-77.07), ph 7.22 (p¼0.014, OR¼8.43, 95% CI 1.54-46.26), open instead of endovascular repair (p¼0.030, OR¼4.04, 95% CI 1.14-14.32) and cardiopulmonary resuscitation (p¼0.028, OR¼31.25, 95% CI 1.46-670.41) were independent predictors of death. Using these five variables, a new score was created (Bicocca Aneurysm Score), allowing to stratify patients at different risk of death. The upper cohort had a perioperative mortality of 100%. Conclusion: The Bicocca Aneurysm Score predicted the 30day mortality in patients who underwent surgical and endovascular treatment for a rAAA. Further studies are required to validate the score.