Echocardiographic assessments of left entricular end-systolic olume, end-diastolic olume, mass, and ejection fraction were performed at baseline and at 6 and 12 months.

• 在第6和第12个月时对病人进行心脏超声检查评价左室收缩末期容积、舒张末期容积、质量和射血分数并与基线水平比较。