OBJECTIVETo evaluate the outcome after endovascular aortic repair (EVAR) of abdominal aortic aneurysms (AAA) in single center.

METHODSA total of 711 AAA patients treated by EVAR in Department of Vascular Surgery, People's Liberation Army General Hospital and met the inclusion criteria from January 2004 to June 2014 were followed-up and analyzed. There were 612 male and 99 female patients, with a mean age of (69±13) years in this study group. The primary outcome of the study was all-cause mortality, secondary outcome included procedural data, intervention-related morbidity and secondary therapeutic procedures. The endpoint was death. Kaplan-Meier survival analysis were used to analyze long-term survival and cumulative probability of intervention related morbidity. Cox proportional hazards regression was used to analyze factors influenced the survival. Multivariable analysis were adjusted for covariates.

RESULTSThere were 74.8% of total patients followed up. The longest follow-up period was 10.4 years (mean 3.8 years). For the primary outcome of all-cause mortality, 140 deaths occurred. Intervention related morbidity was 9.3%, secondary therapeutic procedures was 5.3%.The Kaplan-Meier survival curve showed that cumulative survival is 78% (95% CI: 74% to 82%) in 5 years, 67% (95% CI: 61% to 74%) in 10 years and the cumulative probability of intervention related morbidity is 10.5% (95% CI: 7.3% to 13.7%) in 5 years, 19.3% (95% CI: 11.9% to 26.0%) in 10 years. Cox proportional hazards regression showed that age>75 years, American Society of Anesthesiologists classification III or IV, smoking, diabetes significantly increase the risk of long-term all-cause mortality, while hypertension significantly decreases the risk.

CONCLUSIONSLong-term outcome after EVAR of AAA in the study is similar to those advanced studies.The management of risk factors would improve the prognosis of these patients.