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Table 1 Patient characteristics and postoperative C-reactive protein levels grouped by VO2 at the anaerobic threshold and at peak exercise

From: The relationship between cardiopulmonary exercise test variables, the systemic inflammatory response, and complications following surgery for colorectal cancer

Characteristic

Cardiopulmonary exercise test variable

VO2 at AT < 11 ml/kg/min (n)

VO2 at AT > 11 ml/kg/min (n)

P

VO2 at peak < 19 ml/kg/min (n)

VO2 at peak > 19 ml/kg/min (n)

P

Preoperative

 Age (< 65/65–74/> 74)

5/8/11

3/7/4

0.488

4/9/12

4/6/3

0.130

 Sex (male/female)

19/5

11/3

1.000

19/6

11/2

0.689

 ASA (1/2/3/4)

0/11/12/1

2/8/4/0

0.041

0/10/14/1

2/9/2/0

0.004

 BMI (< 20/20–25/36–30/> 30, kg/m2)

1/4/7/12

1/4/5/4

0.206

1/4/7/13

1/4/5/3

0.106

 Smoker (never/ex/current)

11/9/4

6/6/2

0.981

10/12/3

10/12/3

0.912

 Site (colon/rectum)

16/8

7/7

0.492

17/8

6/7

0.295

 TNM stage (I/II/III/IV)

2/12/9/0

3/7/3/1

0.510

3/13/9/0

2/6/3/1

0.969

 Preop mGPS (0/1–2)

14/8

11/2

0.259

13/9

12/1

0.036

 Neoadjuvant (yes/no)

1/23

2/12

0.542

0/25

3/10

0.034

Intraoperative

 Approach (open/lap)

6/18

8/6

0.081

4/21

10/3

< 0.001

 Stoma (yes/no)

10/13

6/8

1.000

11/13

5/8

0.666

 Transfusion (yes/no)

1/20

0.10

1.000

1/20

0/10

1.000

 Surgery > 4 h (yes/no)

14/10

6/8

0.503

16/9

4/9

0.087

Postoperative

 Any complication (yes/no)

9/15

6/8

1.000

10/15

5/8

1.000

 Clavien Dindo grade 3–5(yes/no)

8/16

2/12

0.268

2/23

1/12

1.000

 Length of stay (median, range, days)

8 (3–19)

8 (5–15)

0.790

8 (3–15)

9 (5–19)

0.169

 POD 3 CRP > 150 mg/l (yes/no)

11/12

8/4

0.476

12/12

7/4

0.493

 POD 4 CRP > 150 mg/l (yes/no)

5/12

5/9

0.709

6/13

4/8

0.919

  1. ASA American Society of Anesthesiology, BMI body mass index, AT anaerobic threshold, mGPS modified Glasgow Prognostic Score, POD postoperative day, CRP C-reactive protein