• J. Endovasc. Ther. · Feb 2011

    Endovascular management of malperfusion in acute type B aortic dissections.

    • Giorgos S Sfyroeras, Vanessa Rubio, Pedro Pagan, Edward B Diethrich, and Julio A Rodriguez.
    • Arizona Heart Institute and Arizona Heart Hospital, Phoenix, Arizona 85006, USA.
    • J. Endovasc. Ther. 2011 Feb 1;18(1):78-86.

    PurposeTo examine the feasibility, efficacy, and midterm results of endovascular stent-graft management of acute type B aortic dissection complicated by renal, visceral, or lower limb malperfusion.MethodsA retrospective review was conducted to identify all patients with acute type B dissection treated endovascularly at a single center between 1998 and 2009. Of the 85 patients identified, 23 (27%) consecutive patients (20 men; mean age 60.9 ± 11.6 years) presented with clinical and imaging evidence of end-organ malperfusion: 7 (30%) renal, 6 (26%) lower limb, 4 (17%) renal and lower limb, 3 (13%) visceral, and single cases of renal/visceral, renal/lower limb/spinal cord, and renal/visceral/spinal cord/lower limb.ResultsAll patients had stent-graft coverage of the proximal entry tear; 5 (22%) patients required additional branch vessel stenting, and 2 (9%) had femorofemoral bypass graft. Successful correction of malperfusion was achieved in 21 (91%) patients. In 1 patient, ischemia in the lower limb was resolved but not in the left kidney; the other patient had an ischemic but viable lower limb and did not require any additional intervention. Thirty-day mortality was 9% (2/23 patients). The incidences of postoperative stroke and paraplegia were 17% (4/23) and 9% (2/23), respectively. The 21 survivors were followed for 17.2 ± 15 months; during this period, 1 patient died, 1 was lost to follow-up, and 5 patients underwent additional open or endovascular procedures.ConclusionEndovascular coverage of the proximal entry tear in acute type B dissections complicated by end-organ malperfusion resulted in correction of malperfusion in the majority of patients. It is a reasonable first line of treatment, but its superiority must be assessed in comparison with other techniques, such as fenestration.

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