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Recently, it was shown that transcatheter aortic valve replacement (TAVR) in selected patients with bicuspid aortic valve (BAV) is feasible and may lead to short–term hemodynamic and clinical improvement. Precise 3D assessment of aortic root geometry resulted in less paravalvular regurgitation after TAVR, however, the aortic root geometry of BAV has not been evaluated adequately. The aim of this study was to examine whether aortic root geometry differs between patients with BAV and tricuspid aortic valve (TAV).
Methods and Results
3D transesophageal echocardiography (3DTEE) was performed in 40 consecutive patients with BAV and age–gender–BSA–matched 36 patients with TAV. Multiplanar reconstruction was used to measure the aortic annulus, Valsalva sinus, and sinotubular junction diameter/area in end–diastole and mid–systole. At least moderate aortic stenosis and regurgitation were identified in 18 and 33 patients; including 28% and 50% of patients with BAV and 19% and 36% of patients of TAV, respectively (P =NS). Analyses by 3DTEE were shown in the Figure. The size of the aortic annulus in BAV was significantly larger than TAV (Figure top right, P <0.001) although the shape and dynamic change of aortic annulus were similar (Figure top left). However, the shape of Valsalva sinus was significantly different between BAV and TAV (Figure bottom left, P <0.001).
3DTEE successfully demonstrated anatomical differences in the aortic root between BAV and TAV.
Poster Sessions, Expo North
Monday, March 11, 2013, 9:45 a.m.–10:30 a.m.
Session Title: Valvular Heart Disease: Clinical VIII
Abstract Category: 31. Valvular Heart Disease: Clinical
Presentation Number: 1286–88
- 2013 American College of Cardiology Foundation