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CardioVascular and Interventional Radiology

Erschienen in:

01.06.2015 | Clinical Investigation

Graft Patency in Long-term Survivors after Renovisceral Debranching with VORTEC

verfasst von: Anna Winklehner, Thi Dan Linh Nguyen-Kim, Thomas Pfammatter, Zoran Rancic, Dieter Mayer, Mario Lachat, Thomas Frauenfelder

Erschienen in: CardioVascular and Interventional Radiology | Ausgabe 3/2015

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Abstract

Purpose

This study was designed to evaluate retrospectively the long-term stent-graft patency after renovisceral revascularization with Viabahn Open Revascularization Technique (VORTEC) using computed tomography angiography (CTA) and magnetic resonance angiography (MRA).

Methods

In 34 patients (seven women; mean age 72 ± 8 years) with aortic aneurysm, 63 renovisceral vessels (i.e., 54 renal, nine visceral arteries) were revascularized with VORTEC between 2004 and 2009. All patients obtained a pre- and postinterventional CTA and at least one follow-up CTA or MRA after 6 or more months following intervention (median follow up: 43 months). Detection of bypass occlusion, bypass stenosis, infolding, stent-graft fractures and dislocations, and kidney shrinkage were noted by two readers in consensus. Furthermore, mortality during follow-up was assessed using the medical report.

Results

During follow-up, 12.6 % of stent-grafts occluded. Cumulative patency rate was 95.2 ± 2.7 % at 12 months, 87.7 ± 4.4 % at 24 and 36 months, and 84.7 ± 5.2 % at 48, 60, 72, 84, and 89 months, respectively. Overall, 19 % of stent-grafts (12/63) developed bypass stenosis (<50 %, 10 stent-grafts; > 50 %, 2 stent-grafts), in one case stenosis (>70 %) was suspected to be hemodynamically significant. No secondary dislocation, no infolding of renovisceral stent-grafts, and no stent-graft fracture occurred. Kidney shrinkage occurred in nine patients, primarily in patients with an occluded Viabahn (n = 7). Eleven patients (32.3 %) died within the follow-up time period.

Conclusions

In long-term survivors after VORTEC cumulative patency rate remained high, and no stent-graft fractures or secondary dislocations occurred.

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Titel: Graft Patency in Long-term Survivors after Renovisceral Debranching with VORTEC
verfasst von: Anna Winklehner
Thi Dan Linh Nguyen-Kim
Thomas Pfammatter
Zoran Rancic
Dieter Mayer
Mario Lachat
Thomas Frauenfelder
Publikationsdatum: 01.06.2015
Verlag: Springer US
Erschienen in: CardioVascular and Interventional Radiology / Ausgabe 3/2015
Print ISSN: 0174-1551
Elektronische ISSN: 1432-086X
DOI: https://doi.org/10.1007/s00270-014-0977-z

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Graft Patency in Long-term Survivors after Renovisceral Debranching with VORTEC