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Radiology, Vol 201, 161-166, Copyright © 1996 by Radiological Society of North America
ARTICLES |
SM Slonim, UR Nyman, CP Semba, DC Miller, RS Mitchell and MD Dake
Department of Radiology, Stanford University Medical Center, Calif, USA.
PURPOSE: To evaluate endovascular treatment of ischemic complications caused by true lumen obliteration in aortic dissection. MATERIALS AND METHODS: Endovascular techniques were used to treat true lumen obliteration in 11 patients with complicated aortic dissection. In all cases, the true lumen was compressed to a paper-thin sliver by the expanded false lumen. Two patients had Stanford type A (chronic) and nine had type B (six acute, three chronic) dissections. Obliteration of the true lumen was associated with branch vessel ischemia that included renal (n = 7), mesenteric (n = 6), and lower-extremity (n = 6) arterial compromise. Two patients were treated with aortic stents, four with balloon fenestration of the intimal flap, and three with both stent placement and fenestration. In two patients, ischemic complications caused by true lumen obliteration could not be treated with endovascular techniques. RESULTS: Revascularization was technically successful with relief of clinical symptoms in nine patients. Revascularization was unsuccessful in one patient in whom surgical revascularization of the superior mesenteric artery was necessary and in one in whom hypertension was managed medically. One patient developed thrombosis of a renal artery in which a stent had been placed. The 30-day mortality rate was 9%, and the mean follow-up was 10.1 months (range, 2 weeks to 39 months). CONCLUSION: True lumen obliteration can be safely and effectively treated with endovascular stent placement and balloon fenestration.
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