Structural determinants of aortic regurgitation in type A dissection and the role of valvular resuspension as determined by intraoperative transesophageal echocardiography.
Publication/Presentation Date
3-1-2000
Abstract
Disruption of the aortic root by dissection often produces significant aortic regurgitation (AR). Resuspension of the native valve usually reestablishes competence. The mechanisms of this complex process are poorly understood. We used intraoperative transesophageal echocardiography to characterize the in vivo aortic root structure of type A aortic dissection and the changes brought about by native valve resuspension. Intraoperative transesophageal echocardiograms were obtained from 34 patients with type A dissection and aortic resuspension between January 1990 and April 1997. The severity of AR, aortic root diameter, circumference of the aortic annulus, percentage of the annulus dissected, and presence of leaflet prolapse were assessed in multiple planes. Preoperatively, AR of varying degree was present in 25 patients (73%). Multivariate analysis revealed that preoperative AR was most related to percentage of the annulus dissected (p
Volume
85
Issue
5
First Page
604
Last Page
610
ISSN
0002-9149
Published In/Presented At
Keane, M. G., Wiegers, S. E., Yang, E., Ferrari, V. A., St John Sutton, M. G., & Bavaria, J. E. (2000). Structural determinants of aortic regurgitation in type A dissection and the role of valvular resuspension as determined by intraoperative transesophageal echocardiography. The American journal of cardiology, 85(5), 604–610. https://doi.org/10.1016/s0002-9149(99)00819-x
Disciplines
Medicine and Health Sciences
PubMedID
11078275
Department(s)
Department of Surgery
Document Type
Article