Abstract:
PURPOSE:We assessed the effects of different types of prosthetic rings on mitral annular dynamics using real-time three-dimensional echocardiography (RT3DE). METHODS:RT3DE was performed in 44 patients, including patients undergoing mitral annuloplasty using the Cosgrove-Edwards flexible band (Group A, n = 10), the semi-rigid Sorin Memo 3D ring (Group B, n = 17), the semi-rigid Edwards Physio II ring (Group C, n = 7) and ten control subjects. Various annular diameters were measured throughout the cardiac cycle. RESULTS:We observed flexible anterior annulus motion in all of the groups except Group C. A flexible posterior annulus was only observed in Group B and the Control group. The mitral annular area changed during the cardiac cycle by 8.4 ± 3.2, 6.3 ± 2.0, 3.2 ± 1.3, and 11.6 ± 5.0 % in Group A, Group B, Group C, and the Control group, respectively. The dynamic diastolic to systolic change in mitral annular diameters was lost in Group C, while it was maintained in Group A, and to a good degree in Group B. In comparison to the Control group, the mitral annulus shape was more ellipsoid in Group B and Group C, and more circular in Group A. CONCLUSION:Although mitral regurgitation was well controlled by all of the types of rings that were utilized in the present study, we demonstrated that the annulus motion and annulus shape differed according to the type of prosthetic ring that was used, which might provide important information for the selection of an appropriate prosthetic ring.
journal_name
Surg Todayjournal_title
Surgery todayauthors
Nishi H,Toda K,Miyagawa S,Yoshikawa Y,Fukushima S,Kawamura M,Yoshioka D,Saito T,Ueno T,Kuratani T,Sawa Ydoi
10.1007/s00595-015-1279-zsubject
Has Abstractpub_date
2016-09-01 00:00:00pages
1083-90issue
9eissn
0941-1291issn
1436-2813pii
10.1007/s00595-015-1279-zjournal_volume
46pub_type
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