Table 2 Comparison of intraoperative and postoperative indexes between the two groups [cases (%)/\(\overline{\textrm{x}}\)±s]

Operating time (min)

109.90±18.88

107.81±15.76

0.650

0.517

Docking time (min)

13.0 (9.0, 16.0)

10.0 (8.0, 13.0)

2.267

0.020

Total operation time (min)

122.31±18.86

118.05±15.69

1.328

0.187

Intraoperative bleeding volume (ml)

35.0 (20.0, 60.0)

40.0 (20.0, 75.0)

1.930

0.058

Total postoperative drainage (ml)

225.0 (140.0, 280.0)

240.0 (180.0, 310)

2.093

0.035

Postoperative drainage time (d)

2.0 (2.0, 3.0)

3.0 (2.0, 3.0)

2.426

0.015

Postoperative hospital stay (d)

3.5 (3.0, 4.0)

4.0 (3.0, 5.0)

2.169

0.030

Postoperative VAS pain score

 Day 1 after surgery

2.5 (2.0, 3.0)

2.8 (2.2, 3.2)

1.705

0.084

 Day 2 after surgery

2.1 (1.8, 2.5)

2.5 (2.0, 3.0)

2.531

0.006

 Day 3 after surgery

1.1 (1.0, 1.4)

1.7 (1.2, 2.2)

2.756

0.002

Postoperative complications

4 (8.6)

5 (21.0)

2.112

0.715

 Arrhythmia

2 (3.8)

3 (4.7)

 Pleural effusion

0

1 (1.6)

 Pulmonary infection

1 (3.8)

0

 Pulmonary atelectasis

1 (1.9)

1 (1.6)