Effect of obesity on radiation exposure, quality of life scores and outcomes of fenestrated-branched endovascular aortic repair of pararenal and thoracoabdominal aortic aneurysms.

Abstract Introduction The aim of this study was to assess the impact of obesity on procedural metrics, radiation exposure, quality of life (QOL) and clinical outcomes of fenestrated-branched endovascular aortic repair (FB-EVAR) for pararenal (PRAAs) and thoracoabdominal aortic aneurysms (TAAAs). Methods We reviewed clinical data of 334 patients (236 male, mean age 75±8 years) enrolled in a prospective non-randomized study to evaluate FB-EVAR between 2013 and 2019. Patients were classified using body mass index (BMI) as obese (BMI > 30kg/m2) or non-obese (BMI Results Aneurysm extent was PRAA in 118 patients (35%) and TAAA in 218 patients (75%). Both groups had similar demographics, cardiovascular risk factors and aneurysm extent, except for more hyperlipidemia and diabetes among obese patients (p Conclusions FB-EVAR was performed with high technical success, low mortality and morbidity with no significant differences between obese and non-obese patients. Procedural metrics and outcomes were similar, with the exception of higher radiation exposure among obese patients, particularly for the procedures done on System 1 with fusion alone as compared to System 2 with fusion and digital zoom. Obese patients had higher QOL mental scores at 6 and 12 months with similar reintervention rate, target vessel outcomes and survival compared to non-obese patients.