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Table 4 Mean pressures across sheep B, C, D, and F during intrathecal constant pressure infusions

From: Intercompartmental communication between the cerebrospinal and adjacent spaces during intrathecal infusions in an acute ovine in-vivo model

Step

ITP (mmHg)

ITPamp (mmHg)

ICP (mmHg)

ICPamp (mmHg)

ABP (mmHg)

ABPamp (mmHg)

CVP (mmHg)

CVPamp (mmHg)

1

20.4 ± 3.8

7.1 ± 1.5

20.7 ± 4.3

5.9 ± 1.1

81.2 ± 9.8

22.4 ± 1.5

4.7 ± 1.0

7.7 ± 0.8

2

22.9 ± 4.1

8.8 ± 1.2

23.4 ± 4.5

6.2 ± 1.1

81.7 ± 9.8

24 ± 1.3

4.8 ± 1.1

7.7 ± 0.8

3

26.1 ± 4.4

8.6 ± 1.4

26.8 ± 4.5

6.7 ± 1.2

81.9 ± 10.0

23.7 ± 1.5

6.2 ± 1.3

7.8 ± 0.9

4

29.3 ± 4.5

8.3 ± 2.0

29.9 ± 4.3

7.6 ± 1.5

81.7 ± 9.5

24.2 ± 2.4

7.1 ± 2.1

7.9 ± 0.9

5

32.2 ± 4.0

8.9 ± 2.1

32.7 ± 3.8

8.0 ± 1.7

83.0 ± 8.9

26.7 ± 3.1

7.5 ± 2.2

8.3 ± 1.1

6

35.0 ± 3.9

9.6 ± 2.1

36.2 ± 4.2

8.4 ± 1.9

85.4 ± 7.8

30.1 ± 2.8

7.9 ± 2.4

8.4 ± 1.2

  1. ITPamp, intrathecal pressure pulse amplitude; ICPamp, intracranial pressure pulse amplitude; ABPamp, arterial blood pressure pulse amplitude; CVPamp, central venous pressure pulse amplitude