Left atrial strain in ischemic mitral regurgitation
Abstract
Aim. To evaluate left atrial global strain and strain rate and their correlation with mitral regurgitation severity in patients with chronic ischemic mitral regurgitation. Materials and methods. The analysis was performed in 118 patients with type Ilb ischemic mitral regurgitation according to Carpentier classification. Standard echocardiography and speckle tracking imaging were performed in order to assess left atrial global strain and strain rate. VIVID 7 Dimension (GE, Healthcare) ultrasound system and EchoPAC were used. Mitral valve (MV) geometry indices, mitral valve volumetric indices, left atrial volumes and left atrial ejection fraction were measured. Results. Left atrial strain values did not depend on mitral regurgitation severity. Left atrial global strain rate depended on mitral regur-gitation severity. The lowest values of left atrial global strain rate were presented in patients with grade 3 mitral regurgitation. Tenting of mitral leaflets correlated with left atrial global strain rate (r=-0,45; p=0,0003). Maximal left atrial volume correlated with the diameter of mitral annulus (r=0,56), coaptation depth (r=0,53), MV tenting area (r=0,56) and interpapillary muscle distance (r=0,51). Left atrial global strain and strain rate did not correlate with left atrial maximal volume and left atrial ejection fraction. Conclusions. MV tenting area, MV annular diameter, coaptation depth and coaptation heights correlate with left atrial maximal volume and global strain rate in patients with ischemic mitral regurgitation. Left atrial global strain rate depends on MR grade. Left atrial strain does not correlate with MR severity.
About the Authors
E. N. Pavlyukova
National Research Medical Centre, Russia Academy of Science
Russian Federation
Russian Federation
T. Yu. Karetina
Cardiology Research Institute
Russian Federation
Russian Federation
M. I. Gankin
Cardiology Research Institute
Russian Federation
Russian Federation
V. A. Sakovich
Cardiology Research Institute
Russian Federation
Russian Federation
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For citations:
Pavlyukova E.N., Karetina T.Yu., Gankin M.I., Sakovich V.A. Left atrial strain in ischemic mitral regurgitation. Medical alphabet. 2017;1(14):32-36. (In Russ.)
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