Table 2 Mean ± standard deviation values of cardiorespiratory parameters, in dogs treated with ketamine (GK: bolus 0.5 mg kg⁻¹; CRI 20 µg kg⁻¹ min⁻¹ in intra- and postoperative periods), fentanyl (GF: bolus 5 µg kg⁻¹; intraoperative CRI 5 µg kg⁻¹ h⁻¹ and postoperative CRI 2 µg kg⁻¹ h⁻¹), or combination of ketamine-fentanyl (GKF: aforementioned doses) in postoperative period

HR

(beats minute⁻¹)

GK

104 ± 13

107 ± 14^a

96 ± 20

87 ± 10^a#

95 ± 14^a

86 ± 13

86 ± 13

98 ± 39

101 ± 14

GKF

110 ± 22

104 ± 13^a

97 ± 9

89 ± 7^a

87 ± 14^a.b#

90 ± 13

90 ± 7

95 ± 14

94 ± 16

GF

97 ± 35

82 ± 24^b

71 ± 13

70 ± 20^b#

75 ± 21^#

65 ± 17^#

79 ± 14

83 ± 18

83 ± 17

f_R

(breaths minute⁻¹)

GK

30 ± 10

40 ± 23

36 ± 15

43 ± 12^#

47 ± 11^#

37 ± 18

32 ± 10

30 ± 10

43 ± 47

GKF

34 ± 14

44 ± 41

39 ± 23

45 ± 23

52 ± 39

35 ± 13

36 ± 11

29 ± 10

35 ± 15

GF

28 ± 4

54 ± 21

44 ± 25

68 ± 37

43 ± 27

29 ± 17

33 ± 20

38 ± 19

27 ± 7

SAP

mmHg

GK

136 ± 25

137 ± 9^a.b

139 ± 12

136 ± 15

136 ± 24

148 ± 17

144 ± 17

140 ± 22

143 ± 16

GKF

153 ± 13

153 ± 15^a

155 ± 18

151 ± 17

170 ± 28

160 ± 15

160 ± 21

151 ± 12

143 ± 21

GF

136 ± 13

132 ± 23^b

163 ± 12

148 ± 8

138 ± 35

136 ± 15

141 ± 10

158 ± 7^#

147 ± 3