Design and Clinical Considerations for Endovascular Stent Grafts.

Endovascular treatment for aortic abnormality is an excellent alternative option for patients who are not good candidates for conventional open surgery. Although the technique of placing endovascular stent grafts has evolved since the first grafts, the basic principles remain the same. Use of endografts is limited by anatomic criteria, and advances in graft design have allowed for more widespread use for a broader patient range. The most important limitations to overcome are achieving high-quality aortic neck "healthy" landing zone, smaller-diameter delivery systems, and endografts that allow for more angled aortic necks.