甲减时，心率减慢、左心房增大、左心室心肌重量增高和短轴缩短率降低。
Slow heart rate, enlarged left atrium, increased left ventricular mass and decreased fractional shortening were detected in patients with hypothyroidism.
观察治疗前后两组患者心功能、肾功能、超声心动图、左室射血分数（LVEF）、左室短轴缩短率（LVFS）的变化。
The changes of cardiac function, renal function, echocardiographic left ventricular ejection fraction(LVEF), left ventricular fraction shortening(LVFS) before and after treatment were compared.
观察治疗前后两组患者心功能、肾功能、超声心动图、左室射血分数（LVEF）、左室短轴缩短率（LVFS）的变化。
The changes of cardiac function, renal function, echocardiographic left ventricular ejection fraction(LVEF), left ventricular fraction shortening(LVFS) before and after treatment were compared.
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