Surveillance of small aortic aneurysms does not alter anatomic suitability for endovascular repair

被引:27
|
作者
Yau, Franklin S.
Rosero, Eric B.
Clagett, Patrick
Valentine, R. James
Modrall, Gregory J.
Arko, Frank R.
Timaran, Carlos H.
机构
[1] Univ Texas, SW Med Ctr, Dept Surg, Div Vasc & Endovasc Surg, Dallas, TX 75390 USA
[2] Dallas VA Med Ctr, Dallas, TX USA
关键词
D O I
10.1016/j.jvs.2006.08.087
中图分类号
R61 [外科手术学];
学科分类号
摘要
Objective: Small abdominal aortic aneurysms (AAAs; 4-5.4 cm) are more likely to be suitable for endovascular aneurysm repair (EVAR) than large aortic aneurysms (> 5.5 cm). The purpose of this study was to determine whether small AAA growth is associated with the development of morphologic characteristics that decrease eligibility for EVAR. Methods. We studied 54 patients who underwent 2 or more computed tomography scans with 3-dimensional reconstruction during surveillance of small AAAs. Morphologic aortic aneurysm features and changes were measured according to Society for Vascular Surgery reporting standards. Suitability for EVAR was determined by neck anatomy (diameter, length, and angulations), iliac artery morphology, and total aortic aneurysm angulation and tortuosity. Results. The median age of the study cohort was 73 years (interquartile range [IQR], 65-77 years). The median follow-up period was 24 months (IQR, 15-36 months). The median small AAA diameter increased from 44.5 mm (IQR, 41-48 mm) to 48.9 mm (IQR, 45.7-52.0 mm). The median aortic neck diameter increased from 23.0 to 24.0 mm (P =.002), whereas median neck length decreased from 26.5 to 20.0 mm (P = .001). Aortic aneurysm median tortuosity index increased from 1.09 to 1.11 (P = .05). No significant changes in iliac artery morphology occurred. Overall, the anatomic suitability for endovascular repair did not significantly change during the study period (74% vs 69%; McNemar test; P = .25). Conclusions: Changes in aortic morphology are frequently associated with small AAA growth at mid-term follow-up, but such changes are minor and do not affect overall anatomic suitability for EVAR. These data reveal that continued surveillance of small AAAs does not threaten the window of opportunity for EVAR.
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页码:96 / 100
页数:5
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