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EFFECTS OF ELECTRICAL-STIMULATION OF MOTOR AND CUTANEOUS NERVES ON SPINAL-CORD BLOOD-FLOW
被引:5
|作者:
SEKI, M
MAEDA, M
机构:
[1] Orthopaedic Surgery, Osaka City University Medical School, Osaka
来源:
关键词:
SPINAL CORD;
SPINAL CORD CIRCULATION;
BLOOD CIRCULATION;
RADIAL NERVE;
SPINAL CORD EVOKED POTENTIAL;
D O I:
10.1097/00007632-199310000-00014
中图分类号:
R74 [神经病学与精神病学];
学科分类号:
摘要:
The effects of electrical stimulation of the motor and cutaneous branch of the radial nerve on spinal cord blood flow (SCBF) in the cervical region and the correlation between the changes in SCBF and the amplitudes of spinal cord evoked potentials were investigated in cats anesthetized with a-chloralose. When measured by the hydrogen clearance technique, with stimuli of the cutaneous branch, the SCBF significantly (P < 0.01) increased from 37 +/- 8 (mean +/- SD) to 59 +/- 27 ml . 100 g-1 - min-1 at 10 Hz and from 39 +/- 6 to 54 +/- 9 ml . 100 g-1 - min-1 at 30 Hz, but stimulation of the motor branch had no effect. When measured by laser Doppler flowmetry, stimulation of the motor branch caused a small, transient, and significant increase in SCBF ending within 2 minutes. Stimulation of the cutaneous branch produced a large, prolonged, and significant increase in SCBF. The increase in SCBF produced by stimulation of the cutaneous nerve was significantly greater than that by stimulation of the motor branch. The SCBF was correlated linearly with the amplitude of the spinal cord evoked potential (r = 0.504; P < 0.01). The increase in SCBF caused by radial nerve stimulation may arise from changes in neuronal metabolism via peripheral nerve activation.
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页码:1798 / 1802
页数:5
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