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Figure 2 Two-dimensional apical four-chamber view of echocardiographic images. Left ventricular end-systolic volumes before (pre) device implantation (left images) and one month after cardiac resynchronization therapy (right images) in two different patients. (A) This patient had a prolonged pre-implantation septal-to-posterior wall motion delay (SPWMD) and a marked left ventricular end-systolic volume reduction after one month. (B) This patient had a short pre-implantation SPWMD and no reverse remodeling.
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