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J Vasc Surg. 2014 Oct;60(4):839-47; discussion 847-8. doi: 10.1016/j.jvs.2014.04.038. Epub 2014 Jul 4.

Anatomic feasibility of off-the-shelf fenestrated stent grafts to treat juxtarenal and pararenal abdominal aortic aneurysms.

Author information

1
Division of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, Minn.
2
Division of Vascular and Endovascular Surgery, Mayo Clinic, Rochester, Minn. Electronic address: oderich.gustavo@mayo.edu.
3
Department of Radiology, Mayo Clinic, Rochester, Minn.
4
Department of Epidemiology and Biostatistics, Mayo Clinic, Rochester, Minn.

Abstract

OBJECTIVE:

The objective of this study was to evaluate the anatomic feasibility of two off-the-shelf fenestrated stent graft designs to treat juxtarenal and pararenal abdominal aortic aneurysms (AAAs).

METHODS:

Digital computed tomography angiograms were analyzed in 520 consecutive patients treated by open or fenestrated endovascular repair for complex AAAs (2000-2012). The anatomic feasibility of two off-the-shelf fenestrated designs, Endologix Ventana (Endologix Inc, Irvine, Calif) and Cook p-Branch (Cook Medical, Brisbane, Australia), was analyzed with the instructions for use (IFU) proposed by investigational protocols.

RESULTS:

There were 390 patients (75%) with juxtarenal and pararenal AAAs considered potential candidates for one of the two devices. Proximal seal (>15 mm) was achieved in all patients with the p-Branch and in 61% of the patients with the Ventana stent graft (P < .0001). The ability to incorporate visceral arteries was greater with the Ventana (90% vs 61%) compared with the p-Branch design (P < .0001). Less than a third of patients met strict IFU criteria with Ventana (27%) or p-Branch (33%; P < .05). By liberal IFU criteria, 42% of patients were candidates for Ventana and 49% for p-Branch (P < .03). Overall, 63% of the patients with juxtarenal and pararenal AAAs were candidates for endovascular repair with one of the two devices.

CONCLUSIONS:

The p-Branch design has greater anatomic feasibility and achieves proximal seal in all patients with juxtarenal and pararenal AAAs but is not able to incorporate visceral arteries in 40% of patients. The Ventana design allows incorporation of the visceral arteries in 90% of patients but fails to provide sufficient seal in 40%. Nearly 40% of juxtarenal and pararenal AAAs do not meet anatomic criteria for endovascular repair with one of the two devices, justifying the need for additional designs.

PMID:
24998837
DOI:
10.1016/j.jvs.2014.04.038
[Indexed for MEDLINE]
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