Aortic Root Imaging and Clinical Application in 15 Patients With Transcatheter Aortic Valve Implantation--A Single Center Early Experience
10.3969/j.issn.1000-3614.2014.09.0015
- VernacularTitle:15例拟行经导管主动脉瓣置换术患者主动脉根部影像学与临床应用--单中心早期经验
- Author:
Moyang WANG
;
Liang XU
;
Hanjun PEI
;
Siyong TENG
;
Haitao ZHANG
;
Bin LV
;
Hao WANG
;
Yuejin YANG
;
Yongjian WU
- Publication Type:Journal Article
- Keywords:
Severe aortic valve stenosis;
Aortic root;
Imaging analysis
- From:
Chinese Circulation Journal
2014;(9):714-717
- CountryChina
- Language:Chinese
-
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<0.001. During 6 months follow-up period, no patients had aortic root rupture, coronary obstruction, moderate and severer aortic and peri-aortic regurgitation. There were 4 patients with atrio-ventricular block and received permanent pacemaker implantation.
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.
