DPJ-029 Left Ventricular Dyssynchrony Using Tissue Doppler Strain Imaging Predicts Postoperative Left Ventricular Systolic Dysfunction in Patients with Chronic Aortic Regurgitation(DPJ05,Echo/Doppler (Myocardium) (I),Digital Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japanese Circulation Society)