Aortic Neck Angulations Decrease during and after Endovascular Aneurysm Repair

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 resul...

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Bibliographic Details
Published in:Journal of endovascular therapy 2010-10, Vol.17 (5), p.594-598
Main Authors: van Keulen, Jasper W., Moll, Frans L., Arts, Jeroen, Vonken, Evert-Jan P., van Herwaarden, Joost A.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Aneurysms
Aortic Aneurysm, Abdominal - diagnostic imaging
Aortic Aneurysm, Abdominal - surgery
Aortography - methods
Blood clots
Blood Vessel Prosthesis
Blood Vessel Prosthesis Implantation - adverse effects
Blood Vessel Prosthesis Implantation - instrumentation
Databases as Topic
Design
Endovascular Procedures - adverse effects
Endovascular Procedures - instrumentation
Female
Humans
Male
Measurement techniques
Medical imaging
Middle Aged
Neck
Netherlands
Standard deviation
Studies
Time Factors
Tomography, X-Ray Computed
Treatment Outcome
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Summary: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
ISSN:1526-6028
1545-1550
DOI:10.1583/10-3131MR.1