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B-1009 - Comparison of aortic root dimensions by multimodal measurement before transcatheter aortic valve implantation

R. Qi; Hangzhou/CN Type: Scientific Paper
Area of Interest: Cardiac
Imaging Techniques: Echocardiography (transoesophageal), Echocardiography, CT
Procedure: Catheters
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Purpose: We sought to compare 3 methods of measurements of the aortic root in patients of severe aortic stenosis (AS), transthoracic echocardiography (TTE), transesophageal echocardiography (TEE), and multislice computed tomography (MSCT), and to evaluate their potential clinical impact on transcatheter aort[...]

Methods and materials: Aortic root dimensions were measured using TTE, TEE, and MSCT in 138 consecutive patients with severe AS referred for TAVI in our institution. The differences among measurements of aortic annulus diameter were compared. The accuracy of the multimodal measurements before TAVI was evaluated with posto[...]

Results:   Mean aortic annulus diameter was 23.37±2.22mm using TTE and 23.52±1.70mm using TEE (p = 0.12) and correlation between TTE and TEE was excellent (r = 0.87). The mean of long- and short-axis diameters according to MSCT multiplanar reconstruction didn’t differ from the diameter derived from cros[...]

Conclusion: In patients referred for TAVI, measurements of the aortic root using TTE or TEE were smaller than measurements by MSCT. In the absence of a gold standard, a strategy based on comprehensive consideration would provide good clinical results.

Personal information: Ruixiang QI, Xiangdong YOU. Heart Center, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China    

References: [1]        Leon  MB, Smith  CR, Mack  M, et al. Transcatheter Aortic-Valve Implantation for Aortic Stenosis in Patients Who Cannot Undergo Surgery. NEW ENGL J MED 2010;363:1597-1607.  DOI:10.1056/NEJMoa1008232 [2]      [...]

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