Aortic Root Imaging and Clinical Application in 15 Patients With Transcatheter Aortic Valve Implantation--A Single Center Early Experience / 中国循环杂志

ABSTRACT

Objective: To study the aortic root imaging and clinical application in 15 patients with transcatheter aortic valve implantation (TAVI). Methods: A total of 15 patients with severe aortic valve stenosis received TAVI in our hospital from 2011-03 to 2013-11 were studied. The CT scan and transthoracic echocardiography were conducted to measure the aortic root anatomy and the differences of annulus size between CT and echocardiography were calculated. The prosthetic valves were selected based on CT measurement. The pre-operative accuracy of measurement was evaluated by the follow-up study at 6 months after operation. Results: The CT measured pre-operative aortic annulus short diameter was (21.5 ± 2.4) mm, long diameter was (27.3 ± 2.7) mm, the average inner diameter was (24.4 ± 2.4) mm, left ventricular out lfow (LVOF) tract long diameter was (28.3 ± 4.5) mm, the average inner diameter of LVOF was (24 ± 3.5), ascending aorta diameter was (35.3 ± 4.4) mm. The Venus Medtech A-Valve implanted in 8 patients with #26 and in 7 patients with #29. The average inner diameter of aortic annulus measured by CT was larger than transthoracic echocardiography, P Conclusion: There is a difference for aortic annulus size by CT and transthoracic echocardiography measurements. CT may presisely assess the aortic root morphology and provide strong support for TAVI.