期刊
INTERNATIONAL JOURNAL OF ANGIOLOGY
卷 27, 期 2, 页码 110-113出版社
THIEME MEDICAL PUBL INC
DOI: 10.1055/s-0038-1649516
关键词
endovascular repair; abdominal aortic aneurysm; aneurysm; aortic valve disease; endograft placement; repair; artery
The abdominal aorta is the most common site of an aortic aneurysm. The visceral and most proximal infrarenal segment (aneurysm neck) are usually spared and considered more resistant to aneurysmal degeneration. However, if an abdominal aortic aneurysm (AAA) is left untreated, the natural history of the aortic neck is progressive dilatation and shortening. This may have significant implications for patients undergoing endovascular repair of AAAs (EVAR) as endograft stability and integrity of the repair are dependent on an intact proximal seal zone. Compromised seal zones, caused by progressive diameter enlargement and foreshortening of the aortic neck, may lead to distal endograft migration, type Ia endoleak, aortic sac repressurization, and, ultimately, aortic rupture.
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