Details

Autor(en) / Beteiligte

• Monahan, Thomas S., MD
• Chuter, Timothy A.M., MD
• Reilly, Linda M., MD
• Rapp, Joseph H., MD
• Hiramoto, Jade S., MD

Titel

Long-term follow-up of neck expansion after endovascular aortic aneurysm repair

Ist Teil von

• Journal of vascular surgery, 2010-08, Vol.52 (2), p.303-307

Ort / Verlag

United States: Mosby, Inc

Erscheinungsjahr

2010

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Objective This study determined the rate, extent, and clinical significance of neck dilatation after endovascular aneurysm repair (EVAR). Methods The study included 46 patients who underwent elective EVAR using bifurcated Zenith stent grafts (Cook, Bloomington, Ind) and had at least 48 months of clinical and radiographic follow-up. Computed tomography images were analyzed on a 3-dimensional workstation (TeraRecon, San Mateo, Calif). Neck diameter was measured 10 mm below the most inferior renal artery in planes orthogonal to the aorta. Nominal stent graft diameter was obtained from implantation records. Results Median follow-up was 59 months (range, 48-120 months). Neck dilation occurred in all 46 patients. The rate of neck dilation was greatest at early follow-up intervals. At 48 months, median neck dilation was 5.3 mm (range, 2.3-9.8 mm). The extent of neck dilation at 48 months correlated with percentage of stent graft oversizing (Spearman ρ = 0.61, P < .001). No type I endoleak or migration >5 mm occurred. Conclusions After EVAR with the Zenith stent graft, the neck dilates until its diameter approximates the diameter of the stent graft. Neck dilation was not associated with type I endoleak or migration of the stent graft.