Abstract
Cerebrospinal fluid pressure (CSFP) in the cervix and lumbar spine was measured percutaneously using a fiberoptic pressure monitor in 28 healthy dogs without neurological abnormalities. The cervical CSFP (C-CSFP) ranged from 2.0 to 12.0 mmHg and its mean was 6.11 mmHg, while the lumber CSFP (L-CSFP) ranged from 2.0 mmHg to 12.0 mmHg and its mean was 5.93 mmHg. The ranges of C-CSFP and L-CSFP were similar. The mean arterial blood pressure (BP) increased from 127.5 ± 14.1 mmHg to 203.9 ± 33.3 mmHg immediately after epinephrine administration, then returned to 122.7 ± 25 mmHg at 30 min after epinephrine administration. The mean C-CSFP was 8.4 ± 3.4 before epinephrine administration, 10.0 ± 5.1 and 9.4 ± 4.8 mmHg at 0 and 30 min after epinephrine administration, respectively. However, the mean L-CSFP was 4.4 ± 2.8 before epinephrine administration, 4.6 ± 5.7 and 5.6 ± 5.0 mmHg at 0 and 30 min after epinephrine administration, respectively. There was no correlation among C-CSFP, L-CSFP, and arterial BP. This study demonstrated that the percutaneous fiberoptic catheter method allows stable and continuous monitoring of CSFP in the spinal canal in dogs.
