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Coarctation of the aorta treated with the Advanta V12 large diameter stent: acute results
Elchanan Bruckheimer1, Einat Birk, Raul Santiago
1Pediatric Cardiac Catheterization, Schneider Children's Medical Center Israel, Kaplan 14, Petach Tikva, Israel. elchananb@bezeqint.net
Objectives:
To report on the early results of treatment of coarctation of the aorta by dilation with a new polytetrafluoroethylene covered stent.
Background:
Transcatheter dilation of aortic coarctation carries the risk of aneurysm or rupture. Covered stent implantation reduces this risk but requires a large delivery system. The Advanta V12 LD covered stent is premounted and requires a 9-11 Fr delivery system.
Methods:
Covered stents on balloons of a diameter sufficient to anchor the stent in the coarctation were implanted using the smallest available delivery system. Secondary dilation with larger diameter balloons was performed until the pressure gradient was <20 mm Hg and the stent was opposed to the aortic wall.
Results:
Twenty-five patients with aortic coarctation underwent stent implantation. Coarctation diameter increased from (6.3 + or - 3.5) mm to (14.4 + or - 2.3) mm (P < 0.0001). Peak pressure gradient decreased from (25.3 + or - 11.6) mm Hg to (2.5 + or - 3.0) mm Hg (P < 0.0001). The stent achieved the desired diameter in all cases. There were no complications. At short-term median follow-up of 4.9 months, all patients are alive and well with no evidence of recoarctation or aneurysm.
Conclusions:
These initial results show that the covered Advanta V12LD stent is safe and effective in the immediate treatment of coarctation of the aorta through a low profile delivery system of 8-11 Fr. Long term follow up is required.
