Cardiac Resynchronization Therapy and Left Atrial Remodeling: A Novel Insight?

Figures

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  Figure 1. The impact of CRT on LA volumes. Patient with dilated cardiomyopathy, LVEF of 33%, and QRS morphology of LBBB with duration of 153 msec. Echocardiographic evaluation using a General Electric VIVID E95 vendor and EchoPac software package to determine LA biplane volumes (Images from the personal collection of the authors). Initial evaluation showed increased LA volumes (A) and, after a 6-month follow-up, significant LA remodeling with reduction in LA volumes can be seen (B). Abbreviations: LA, left atrium; LBBB, left bundle branch block; LVEF, left ventricle ejection fraction.

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  Figure 2. The impact of CRT on LA strain. Patient with dilated cardiomyopathy, LVEF of 33%, and QRS morphology of LBBB with duration of 153 msec. Echocardiographic evaluation using a General Electric VIVID E95 vendor and EchoPac software package to determine LA strains (Images from the personal collection of the authors). Initial evaluation showed impaired LA strains (A) and, after a 6-month follow-up, there is significant LA functional reverse remodeling with improved LA strains (B). Abbreviations: LA, left atrium; LBBB, left bundle branch block; LVEF, left ventricle ejection fraction.