Table 2 Physiological values (mean ± SD) of goats that underwent thoracolumbar epidural anesthesia with bupivacaine (BUP) and bupivacaine plus methadone (BMT)

HR

BUP

82 ± 10

94 ± 17

94 ± 10

92 ± 10

98 ± 18

BMT

108 ± 20

99 ± 16

91 ± 15

95 ± 16

95 ± 13

f_R

BUP

28 ± 12

24 ± 5

22 ± 3

23 ± 2

25 ± 8

BMT

36 ± 17

22 ± 6

24 ± 10

21 ± 8

23 ± 8

RM

BUP

2 ± 1

3 ± 1

2 ± 1

2 ± 1

2 ± 1

BMT

2 ± 0

2 ± 1

2 ± 1

2 ± 0

2 ± 0

T

BUP

38.7 ± 0.4

38.5 ± 0.3

38.6 ± 0.5

38.6 ± 0.6

38.6 ± 0.6

BMT

38.7 ± 0.5

38.6 ± 0.4

38.7 ± 0.3

38.6 ± 0.5

38.7 ± 0.6

pH

BUP

7.46 ± 0.06

-

-

7.46 ± 0.04

-

BMT

7.46 ± 0.02

-

-

7.47 ± 0.02

-

PaO₂

BUP

79 ± 20.2

-

-

83 ± 15.9

-

BMT

65 ± 26.2

-

86 ± 8.7

-

PaCO₂

BUP

34 ± 5.1

-

-

33 ± 5.7

-

BMT

32 ± 3.7

-

-

31 ± 3.6

-

HCO₃ ⁻

BUP

24.7 ± 5.1

-

-

23.7 ± 4.3

-

BMT

22.6 ± 2.6

-

-

22.8 ± 2.4

-

SaO₂

BUP

93 ± 7.3

-

-

95.4 ± 2.6

-

BMT

95 ± 2.2

-

-

96.4 ± 1.3

-

BE

BUP

1.4 ± 5.6

-

-

0.4 ± 4.8

-

BMT

−1 ± 2.6

-

-

−0.5 ± 2.1

-