This study intends to include patients who had aortic root lesions and were treated with Bentall surgery from January 2019 to July 2023 in the First Affiliated Hospital of Xi'an Jiaotong University. The patients will be divided into the minimally invasive group and control group according to the surgical methods: the former underwent minimally invasive Bentall surgery through a small right intercostal incision; the latter underwent traditional Bentall surgery through a median sternal incision. By comparing the clinical data of patients in two groups, we will investigate the effect and safety of minimally invasive Bentall surgery.

Inclusion Criteria:

- Patients who were diagnosed with aortic root lesions and treated with the Bentall procedure at the First Affiliated Hospital of Xi'an Jiaotong University from January 2019 to July 2023 will be included in this study.

Exclusion Criteria:

• Previous sternotomy or aortic root surgery;
• Combined coronary artery disease requiring simultaneous coronary revascularization;
• Combined aortic arch lesions requiring simultaneous aortic arch surgery;
• Preoperative comorbidities with severe single or multiple organ failure;
• Incomplete clinical information;

Patients who were diagnosed with aortic root lesions and treated with the Bentall procedure at the First Affiliated Hospital of Xi'an Jiaotong University from January 2019 to July 2023 will be included in this study.