Format

Send to

Choose Destination
J Endovasc Ther. 2010 Oct;17(5):594-8. doi: 10.1583/10-3131MR.1.

Aortic neck angulations decrease during and after endovascular aneurysm repair.

Author information

1
Department of Vascular Surgery, University Medical Center Utrecht, The Netherlands.

Abstract

PURPOSE:

To investigate whether suprarenal and infrarenal aortic neck angles change immediately after endovascular aneurysm repair (EVAR) or during follow-up. A change in aortic angulation influences the proximal stent-graft sealing and fixation zone, thereby possibly influencing the long-term results of EVAR.

METHODS:

Forty-three EVAR patients (39 men; mean age 73 years, range 62-85) with preoperative, postoperative, and 1, 2, and 3-year follow-up computed tomographic angiography (CTA) data were selected from our center's vascular database. The suprarenal and infrarenal angulations on all CTAs were measured using a standardized 3-dimensional centerline method, which has a repeatability coefficient of 6.4° (20.2%) for the suprarenal angle and 6.2° (13.4%) for the infrarenal angle. Repeated measures analysis was used to test the effect of angulation over time, followed by a post-hoc analysis.

RESULTS:

The mean suprarenal angulation was 28°±16° preoperatively, 22°±16° postoperatively, 19°±15° after 1 year, 17°±14° after 2 years, and 16±13° after 3 years (mean difference 5°, 9°, 11°, and 12°, respectively). The aortic suprarenal angle decrease was significant (all p<0.01) compared with the preoperative measurements at all time points. The mean infrarenal angulation was 50°±18° preoperatively and changed to 41°±15° postoperatively, to 39°±14° after 1 year, to 38°±14° after 2 years, and to 36°±14° after 3 years (mean difference 8°, 11°, 11° and 13°, respectively). The infrarenal aortic angle decrease was significant (all p<0.01) compared with the preoperative measurements at all time points.

CONCLUSION:

The aortic suprarenal and infrarenal angles decrease during EVAR and in the years after this procedure.

PMID:
20939714
DOI:
10.1583/10-3131MR.1
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Atypon
Loading ...
Support Center