Abstract
Acute kidney injury (AKI) is a common postoperative complication after abdominal aortic aneurysm (AAA) repair and is associated with significant morbidity and mortality. However, limited studies have investigated this complication in elderly patients. This study aims to evaluate AKI in octogenarians after open endovascular AAA repair (OAR) and endovascular AAA repair (EVAR). Data were obtained from the Vascular Quality Initiative database on all patients who underwent elective infrarenal AAA repair between January 2003 and April 2017. Univariate analysis was used to compare AKI rates as well as failure to rescue after AKI between octogenarians and nonoctogenarians in OAR and EVAR. Stepwise multivariable logistic regression analysis was implemented to identify independent predictors and develop a risk calculator of AKI in octogenarians undergoing AAA repair. A total of 27,993 patients (12% OAR and 88% EVAR) were included, of which 6708 (24%) were octogenarians (OAR, 332; EVAR, 6376). Postoperative AKI was more common in octogenarians as compared with nonoctogenarians in OAR (15.1% vs 10.1%; P = .01) and EVAR (4.2% vs 2.7%; P < .001). Similarly, failure to rescue, defined as 30-day mortality after postoperative AKI, was higher in...Continue Reading
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