<b>Incidence of Renal Infarctions After Transrenal Stent Placement in an Animal Model</b>

Krämer, Stefan; Görich, Johannes; Bachmann, R.; Fuge, Daniel; Kuhnt, B.; Scharrer‐Pamler, R.

doi:10.1583/04-1486mr.1

Cited by 2 publications

(2 citation statements)

References 30 publications

(27 reference statements)

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“…28 With 3D images, we did not observe any of these complications in our small group, but the potential danger of stent struts crossing the renal arteries should not be ignored by surgeons from a long-term point of view. 13,14,34 It is possible that the morphology of the aneurysm sac and adjacent aortic branches changes following endovascular AAA repair. In some cases, foreshortening of the sac reduces the distance between the proximal and distal anchor sites, causing the stent-graft to buckle, kink, migrate, or occlude a graft limb.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Visualization of Suprarenal Aortic Stent-Grafts:Evaluation of Migration in Midterm Follow-up

Sun¹

2006

Journal of Endovascular Therapy

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ࡗ ࡗPurpose: To investigate the midterm results of transrenal fixation of abdominal aortic stentgrafts with regard to device migration and encroachment of stent wires on the renal and visceral branches. Methods: Imaging data from 18 patients (15 men; mean age 75 years, range 63-84) undergoing transrenal stent-graft fixation for abdominal aortic aneurysm (AAA) were included in the study. Computed tomographic angiographic data acquired within 1 week of stentgraft implantation were compared to the latest follow-up images. Postprocessing methods generated 3-dimensional (3D) maximum intensity projections (MIP) and virtual intravascular endoscopy (VIE) for evaluation of the relationship between suprarenal stents and aortic branches. Aortic neck angulation was measured in each patient for correlation with the incidence of stent migration. Results:The mean follow-up period was 40 months. 3D image visualizations showed that the stent-graft moved caudally in all patients (range 2.6-14.2 mm), with migration (Ͼ10 mm) observed in 4 (22%) patients. Corresponding VIE images documented changes in stent wire encroachment on the aortic branch ostia in 11 patients, including the number and position of crossing stent wires. There was no close relationship between aortic neck angulation and stent migration. Conclusion:The current study demonstrated that migration occurs at midterm follow-up in transrenally deployed stent-grafts. 3D images were valuable for the assessment of stent migration, as well as its relationship with aortic branch ostia. Long-term follow-up of transrenal fixation deserves to be investigated, especially after observing stent migration relative to aortic ostial encroachment. J Endovasc Ther 2006;13:85-93

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Section: Discussionmentioning

confidence: 99%

Three-Dimensional Visualization of Suprarenal Aortic Stent-Grafts:Evaluation of Migration in Midterm Follow-up

Sun¹

2006

Journal of Endovascular Therapy

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“…Using a sheep model, German investigators observed an increased incidence of renal infarctions after transrenal fixation compared with infrarenally placed grafts (58.3% vs 25%; P ϭ .04). 13 Although not limited to endografts with transrenal fixation, renal infarcts were certainly more common with these grafts.…”

Section: Discussionmentioning

confidence: 99%

Comparison of renal function after endovascular aneurysm repair with different transrenally fixated endografts

Forbes

Harding

Lawlor

et al. 2006

Journal of Vascular Surgery

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Incidence of Renal Infarctions After Transrenal Stent Placement in an Animal Model

Abstract: A transrenal stent position in the abdominal aorta is related to increased renal infarctions in an animal model.

Cited by 2 publications

References 30 publications

Three-Dimensional Visualization of Suprarenal Aortic Stent-Grafts:Evaluation of Migration in Midterm Follow-up

Three-Dimensional Visualization of Suprarenal Aortic Stent-Grafts:Evaluation of Migration in Midterm Follow-up

Comparison of renal function after endovascular aneurysm repair with different transrenally fixated endografts

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