CHANGES OF SPINAL EVOKED POTENTIALS IN ACUTE DECOMPRESSION SICKNESS OF RATS
- VernacularTitle:大鼠急性减压病时脊髓诱发电位的变化
- Author:
Tie XU
- Publication Type:Journal Article
- Keywords:
spinal evoked potential;
decompression sickness;
blood flow gas bubble sound;
rats
- From:
Academic Journal of Second Military Medical University
1982;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Changes of spinal evoked potentials (SEP) were observed in rats by stimulating the sciatic nerves on both sides under various pressure conditions (normal, hyperbaric, rapid decompression, safe decompression, and recompression treatment) and in acute anoxia.It was observed that occurence of acute decompression sickness(DCS)was related with changes of SEP.The changes of SEP late compo-nents(N3, P3, N2)occurred earlier than SEP early components ( P2, N1, P1 ) .It was shown that in using SEP method to monitor DCS,late components were more sensitive as compared with early components and special attention should be given to the amplitudes of SEP.As soon as changes of late components appeared, acute DCS would follow.If recompression would be given at this point, DCS could be reduced or eliminated.when early components showed changes, DCS was in such a stage as to cause immediate death of the animals.Recompression had no effects at this point.The late components and early components, therefore,were of significantly different value in reflecting the level of DCS.N2 wave was an important key.The results suggest that using the SEP mothod to monitor acute DCS is a sensitive and accurate way.
