Table 1 Blood pressure measurements in the four treatment groups.

From: Pitfalls of invasive blood pressure monitoring using the caudal ventral artery in rats

Time (minute)

2

4

6

8

10

12

14

16

18

20

Average

HwTw

 CCA

106.1 ± 36.7

109.2 ± 14.0

111.2 ± 16.0

111.3 ± 21.7

110.8 ± 20.4

109.0 ± 19.4

106.2 ± 20.8

103.3 ± 22.1

92.5 ± 21.4

100.3 ± 19.9

106.7 ± 19

 CVA

91.4 ± 10.2

96.9 ± 12.9

98.8 ± 16.0

99.9 ± 22.5

101.2 ± 20.1

100.7 ± 18.4

97.2 ± 18.6

92.4 ± 20.5

90.5 ± 18.3

90.1 ± 17.8

95.89 ± 18

 Difference

14.1 ± 8.8

12.3 ± 8.7

12.4 ± 7.6

11.5 ± 6.0

9.7 ± 7.1

8.3 ± 7.3

9.0 ± 7.5

10.9 ± 6.4

9.6 ± 7.0

10.2 ± 7.4

10.8 ± 7.4

HcTw

 CCA

101.3 ± 14.3

100.3 ± 13.5

102.1 ± 12.3

100.7 ± 12.5

100.1 ± 11.0

98.7 ± 10.7

99.3 ± 9.7

98.5 ± 12.4

100.6 ± 10.4

100.2 ± 8.6

100.2 ± 11.5

 CVA

90.1 ± 10.7

89.0 ± 9.7

91.6 ± 6.5

89.0 ± 6.3

87.4 ± 6.5

84.8 ± 9.0

84.2 ± 10.5

80.2 ± 12.9

80.8 ± 16.1

83.1 ± 17.4

86.1 ± 11.4

 Difference

11.3 ± 9.4

11.3 ± 9.4

10.5 ± 8.3

11.7 ± 8.6

12.7 ± 10.9

13.9 ± 12.8

15.1 ± 15.6

18.3 ± 17.0

19.8 ± 22.7

17.0 ± 17.3

14.0 ± 13.7

HwTc

 CCA

102.7 ± 12.8

102.9 ± 11.8

102.1 ± 12.1

99.4 ± 14.3

96.7 ± 14.8

94.9 ± 14.5

95.2 ± 13.5

95.6 ± 13.1

94.9 ± 14.0

93.9 ± 12.9

97.9 ± 13.5

 CVA

83.6 ± 18.0

84.3 ± 16.9

82.2 ± 15.8

75.0 ± 21.0

69.2 ± 18.9

66.4 ± 18.4

66.5 ± 18.7

69.3 ± 16.6

67.4 ± 16.8

70.2 ± 14.4

73.6 ± 18.7

 Difference

19.1 ± 15.3

17.7 ± 14.6

19.3 ± 16.5

28.1 ± 26.2

27.6 ± 21.0

28.6 ± 20.7

28.7 ± 21.3

25.1 ± 16.7

26.4 ± 16.0

33.1 ± 29.6

25.2 ± 20.2

Bleeding

 CCA

90.2 ± 17.2

83.4 ± 16.2

84.0 ± 16.6

90.3 ± 21.0

87.5 ± 17.9

85.5 ± 16.9

83.5 ± 15.6

88.9 ± 25.0

88.1 ± 22.3

86.4 ± 25.9

86.7 ± 19.3

 CVA

60.6 ± 16.4

57.5 ± 11.0

58.7 ± 15.2

67.1 ± 25.0

65.7 ± 21.5

62.7 ± 19.0

61.8 ± 19.6

67.1 ± 28.5

68.3 ± 27.1

65.2 ± 28.8

63.4 ± 21.3

 Difference

29.1 ± 24.1

18.5 ± 10.8

21.6 ± 14.4

21.2 ± 11.0

21.6 ± 9.8

22.8 ± 9.7

21.1 ± 11.8

24.9 ± 15.5

22.3 ± 13.1

25.0 ± 13.2

22.9 ± 13.8

  1. The table shows the actual time course values obtained in the HwTw (both head and tail kept warm), HcTw (head cool, tail warm), HwTc (head warm, tail cool), and bleeding groups with the mean±SD (mmHg). The HwTw group exhibited the least variation in blood pressure among the groups.