Table 2 Preoperative comorbidity and postoperative complications according to normal or abnormal ABGs

 Hypertension

105

63

42

0.216

 Diabetes mellitus

61

37

24

0.444

 Cerebral disease

36

20

16

0.215

 Cardiovascular disease

53

32

21

0.459

 COPD/IP

64

32

32

0.006

 Moderate-to-sever renal disease^a)

84

55

29

0.914

 Child-Pugh classification (B or C)

9

7

2

0.416

 Any prior tumor

96

63

33

0.879

In-hospital mortality

1

0

1

Major complications

16

10

6

0.832

 Re-exploration/IVR

2

1

1

 Bronchopleural fistula

0

0

0

 Cerebral infarction

1

1

0

 Respiratory failure/pneumonia

9

5

4

 Other organ failure^b)

4

3

1

Minor complications

117

83

34

0.110

 Continuous air leakage

50

34

16

0.633

 Prolonged pleural effusion/chylothorax

31

21

10

0.737

 Supraventricular arrhythmias

27

20

7

0.820

 Atelectasis/obstructive symptoms

12

9

3

0.461

 Wound/intrathoracic infection

11

7

4

0.925

 Change in mental status

8

7

1

0.178

 Paresis of recurrent laryngeal nerve

4

2

2

0.528