Abstract
Several alternative methods are available for aortoiliac revascularization when the standard approach is contraindicated or hazardous. In these circumstances, axillofemoral bypass is favored, but the long-term patency is inferior and is generally reserved for higher-risk patients. Better inflow with improvement in long-term results can be achieved using a more proximal aortic source from the supraceliac, or ascending or descending thoracic aorta. All of these alternatives provide excellent inflow and the patency rates are comparable. The final choice will depend upon the surgeon's personal preference. The descending thoracic aorta-to-femoral bypass is a useful technique in selected, younger, low-risk vascular patients. It is a valuable option when the transabdominal approach to the infrarenal aorta is difficult, such as after prior removal of an infected aortic graft. Relative indications include multiple previous laparotomies or multiple aortic reoperations, a densely scarred retroperitoneum, or heavy calcification or ectasia of the abdominal aorta.
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