Results of endoluminal grafting in an experimental aortic aneurysm model.

摘要: Abstract We studied the impact of an endoluminally placed stented aortic graft on geometry a surgically created abdominal dilation (AAD) in nonatherosclerotic mongrel dogs. Patulous iliac vein patch infrarenal aortoplasty produced fusiform AAD, doubling aorta diameter. Lumbar and mesenteric tributaries were preserved no mural thrombus formed. AADs 23 dogs excluded through transfemoral placement thin-wall Dacron 4 ± 2 months later. Balloon-expandable stents used to anchor each end aorta. The was crimped radially its body longitudinally at ends provide longitudinal radial expandability these respective zones. Serial color duplex, angiography, direct caliper measurements made. Before placement, 19% 11% diameter growth observed. At flow arrest immediately occurred space between AAD intima all cases. Although microscopic recanalization this seen sacrifice 6 12 later, macroscopic duplex imaged. A 10% reduction measured ( p