Lederle FA, et al. - In this investigation involving 881 patients (444 were assigned to endovascular repair and 437 to open repair), researchers sought to compare endovascular repair with open repair of abdominal aortic aneurysm. Patients with asymptomatic abdominal aortic aneurysms were randomly assigned to either endovascular repair or open repair of the aneurysm. Chronic obstructive lung disease death with the open repair was just over 50% more common. Overall long-term survival among patients undergoing endovascular repair and those undergoing open repair was similar. The number of patients who underwent secondary therapeutic procedures noted a difference between groups. The findings were not consistent with the findings of worse endovascular repair performance in relation to long-term survival seen in the two European trials.