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Table 1 Baseline characteristics

From: Effects of bupivacaine or levobupivacaine on cerebral oxygenation during spinal anesthesia in elderly patients undergoing orthopedic surgery for hip fracture: a randomized controlled trial

Description of patients

Bupivacaine (n = 28)

Levobupivacaine (n = 28)

N

%

N

%

Gender

Female

19

67.9

24

85.7

ASA physical status

1

0

0

1

3.6

2

2

7.1

9

32.1

3

26

92.9

18

64.3

Education

Elementary school

26

92.9

27

96.4

High school/University degree

2

7.1

1

3.6

Concomitant diseases

Hypertension

18

64.3

18

64.3

Diabetes Mellitus

13

46.4

6

21.4

Dyslipidemia

7

25.0

8

28.6

Arrhythmia

7

25.0

5

17.9

Renal Failure

7

25.0

3

10.7

Cerebrovascular disease

1

4.2

4

16.7

Depression

1

3.6

6

21.4

Concomitant treatments

Diuretic

14

50.0

11

39.3

ACE inhibitors

10

35.7

7

25.0

AR Blockers

6

21.4

8

28.6

Calcium antagonists

7

25.0

4

14.3

Beta-blockers

5

17.9

6

21.4

CNS drugs

19

67.9

25

89.3

Benzodiazepines

11

39.3

11

39.3

Antidepressants

8

28.6

12

42.9

Fracture type

Pertrochanteric

17

60.7

11

39.3

Subtrochanteric

1

3.6

5

17.9

Femoral neck

8

28.6

7

25

Periprosthetic

1

3.6

2

7.1

Supracondylar

1

3.6

1

3.6

Distal diaphyseal

0

0

2

7.1

Surgery type

Intramedullary internal fixation

16

57.1

14

50.0

Extramedullary internal fixation

5

17.9

8

28.6

Total hip arthroplasty

3

10.7

1

3.6

Cemented arthroplasty

4

14.3

3

10.7

Cementless hemiarthroplasty

0

0

2

7.1

Local anesthetic doses

7 mg

8

28.6

7

25.0

9 mg

20

71.4

21

75.0

Right rCSO2 lower than Left rCSO2

14

50.0

11

39.3

 

Mean (SD)

n

Mean (SD)

N

Age (years)

83.1 (5.5)

28

83.7 (6)

28

Weight (Kg)

66 (10.3)

28

67.6 (11.7)

28

Height (cm)

161 (7)

28

159.1 (6.3)

28

Baseline hemoglobin (g/L)

112.6 (19)

28

116.2 (18.1)

28

Duration on surgical intervention (min)

60.6 (24.7)

28

78.9 (35.5)

28

Baseline SBP (mmHg)

150.8 (24.7)

28

148.7 (21.8)

28

Baseline MAP (mmHg)

87.1 (14.2)

27

87.8 (14.4)

27

Baseline HR (bpm)

78.7 (11.7)

28

81.5 (11.5)

28

Baseline oxygen saturation (%)

92.4 (6.6)

28

93.9 (2.7)

28

Baseline rCSO2 (%) Left

59.8 (7.8)

28

59.7 (10.4)

28

Baseline rCSO2 (%) Right

58.8 (9.1)

28

60.1 (11.2)

28

  1. ASA American Society of anesthesiologists, bpm beats per minute, HR heart rate, MBP mean blood pressure, SBP systolic blood pressure, SD standard deviation, rCSO2 regional cerebral oxygen saturation