Follow-up
All patients were examined by Transthoracic Echocardiogram (TTE) to evaluate the recovery of cardiac function one week after operation. All discharged patients are followed up at 1 month, 3 months, 6 months and 1 year in our outpatient clinic or by telephone call. Follow-up data include TTE, survival rate, readmission rate, and incidence of adverse events. Follow-up data include TTE, readmission rates, and the incidence of adverse events.