To treat AAA, interventional radiologists use imaging to guide a catheter and graft inside a patient's arterywithout the need to cut open the abdomen, as in surgery. Going through skin at the groin, a catheter is passed into the femoral artery and directed to the aortic aneurysm. The doctor passes a stent graft, which is compressed into a small diameter within the catheter, through the catheter. The stent graft is advanced to the aneurysm and then opened, creating new walls in the blood vessel through which blood flows. This innovative and noninvasive method of placing a graft within an aneurysm redirects blood flow and stops direct pressure from being exerted on the weak aortic wall, explained Sabharwal.
Interventional radiologists analyzed the results of 453 patients (ages 40) who underwent endovascular repair for AAA over an eight-year period, studying the rate of secondary interventions (or the necessity of performing additional procedures to correct complications from a prior treatment) and whether the need for repeat interventions could be predicted by surveillance imaging. "Most importantly, the overall rate of secondary interventions after endovascular repair was 7.2 percent, which compares favorably to open surgery series," said Sabharwal. Complications include possible movement of the graft after treatment or persistent blood flow into the aneurysm, which resumes the risk of its growth or rupture. Also, the graft must be monitored to ensure its continued function, and endoleaks may occur, causing bloo
|Contact: Maryann Verrillo|
Society of Interventional Radiology