Aortic morphometry at endograft position as assessed by 3D image analysis affects risk of type I endoleak formation after TEVAR
PurposeThe purpose of this study was to identify morphologic factors affecting type I endoleak formation and bird-beak configuration after thoracic endovascular aortic repair (TEVAR).MethodsComputed tomography (CT) data of 57 patients (40 males; median age, 66 years) undergoing TEVAR for thoracic ao...
Gespeichert in:
| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
22 February 2015
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| In: |
Langenbeck's archives of surgery
Year: 2015, Jahrgang: 400, Heft: 4, Pages: 523-529 |
| ISSN: | 1435-2451 |
| DOI: | 10.1007/s00423-015-1291-1 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/s00423-015-1291-1 Verlag, Volltext: https://link.springer.com/article/10.1007/s00423-015-1291-1 
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| Verfasserangaben: | Drosos Kotelis, Carolin Brenke, Stefan Wörz, Fabian Rengier, Karl Rohr, Hans-Ulrich Kauczor, Dittmar Böckler, Hendrik von Tengg-Kobligk |
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| 520 | |a PurposeThe purpose of this study was to identify morphologic factors affecting type I endoleak formation and bird-beak configuration after thoracic endovascular aortic repair (TEVAR).MethodsComputed tomography (CT) data of 57 patients (40 males; median age, 66 years) undergoing TEVAR for thoracic aortic aneurysm (34 TAA, 19 TAAA) or penetrating aortic ulcer (n = 4) between 2001 and 2010 were retrospectively reviewed. In 28 patients, the Gore TAG® stent-graft was used, followed by the Medtronic Valiant® in 16 cases, the Medtronic Talent® in 8, and the Cook Zenith® in 5 cases. Proximal landing zone (PLZ) was in zone 1 in 13, zone 2 in 13, zone 3 in 23, and zone 4 in 8 patients. In 14 patients (25 %), the procedure was urgent or emergent. In each case, pre- and postoperative CT angiography was analyzed using a dedicated image processing workstation and complimentary in-house developed software based on a 3D cylindrical intensity model to calculate aortic arch angulation and conicity of the landing zones (LZ).ResultsPrimary type Ia endoleak rate was 12 % (7/57) and subsequent re-intervention rate was 86 % (6/7). Left subclavian artery (LSA) coverage (p = 0.036) and conicity of the PLZ (5.9 vs. 2.6 mm; p = 0.016) were significantly associated with an increased type Ia endoleak rate. Bird-beak configuration was observed in 16 patients (28 %) and was associated with a smaller radius of the aortic arch curvature (42 vs. 65 mm; p = 0.049). Type Ia endoleak was not associated with a bird-beak configuration (p = 0.388). Primary type Ib endoleak rate was 7 % (4/57) and subsequent re-intervention rate was 100 %. Conicity of the distal LZ was associated with an increased type Ib endoleak rate (8.3 vs. 2.6 mm; p = 0.038).ConclusionsCT-based 3D aortic morphometry helps to identify risk factors of type I endoleak formation and bird-beak configuration during TEVAR. These factors were LSA coverage and conicity within the landing zones for type I endoleak formation and steep aortic angulation for bird-beak configuration. | ||
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