Table 1 Baseline characteristics and intraoperative demographics.

From: Effect of hyperbaric oxygen therapy on postoperative muscle damage and inflammation following total knee arthroplasty: a randomized controlled trial

Demographic

Control group (n = 40)

HBOT group (n = 38)

p

Mean age, years

68.83 ± 7.23

67.42 ± 6.97

0.386

Sex (Men/Women)

12/28

6/32

0.137

Mean BMI, kg/m2

26.7 ± 3.31

26.54 ± 2.73

0.812

Length of hospital stay, days

6.5 ± 0.8

3.6 ± 0.8

0.671

Postoperative length of stay, days

6.6 ± 0.6

3.4 ± 0.7

0.740

ASA (II/III)

31/9

32/6

0.452

Diabetes

10 (25%)

7 (18.42%)

0.482

Hypertension

19 (47.5%)

22 (57.89%)

0.358

Operation side (Left/Right, n)

18/22

24/14

0.108

Normal/Varus/Valgus(n)

12/14/14

12/15/11

0.842

Flexion deformity

20 (50%)

22 (57.89%)

0.484

Range of Motion (°)

92.5 ± 5.95

91.71 ± 7.72

0.616

Preoperative quadriceps muscle strength

4.88 ± 0.21

4.86 ± 0.14

0.634

HSS score

47.75 ± 6.76

49.26 ± 3.52

0.217

Tourniquet Time

78.5 (72.75,90.25)

80 (73.25,94.25)

0.696

Preoperative laboratory outcomes

hemoglobin, g/L

134.51 ± 12.68

133.13 ± 13.7

0.768

hematocrit, %

0.42 ± 0.05

0.41 ± 0.04

0.706

IL-6, pg/mL

3.01 ± 1.49

3.47 ± 1.23

0.530

CRP, mg/L

4.31 ± 3.74

3.16 ± 2.21

0.421

Mb, ng/mL

29.15 ± 7.37

27.78 ± 10.91

0.975

CK, U/L

91.83 ± 22.91

93.34 ± 37.44

0.999

LDH, U/L

180.17 ± 27.46

188.34 ± 21.47

0.986

GOT, U/L

19.40 ± 3.98

20.74 ± 3.06

0.409

  1. BMI: body mass index; ASA: American Society of Anesthesiologists status; HSS: hospital for special surgery; IL-6: interleukin-6; CRP: C-reactive protein; Mb: myoglobin; CK: creatine kinase; LDH: lactate dehydrogenase; GOT: glutamic oxaloacetic transaminase;.