Summary
The value of spinal cord evoked potentials for intraoperative prediction of the prognosis following acute or chronic spinal cord impairment was investigated in clinical cases. Simply by observing the pattern and amplitude of the potentials, we could not predict the prognosis significantly. Comparison of amplitudes in consecutive recordings, however, provided clinically useful information.
Conclusions derived from the present study are as follows:
-
1.
The spinal evoked potential was not recorded in cases of neurologically complete spinal cord lesion.
-
2.
Neurological improvement could be anticipated in cases who showed an increment in amplitude.
-
3.
Patients showing no change in amplitude still had a certain possibility of improved neurological symptoms.
-
4.
Decreased amplitude or complete disappearance of the potential were found to indicate postoperative neurological deterioration.
-
5.
Complete disappearance of the potential was indicative of severe spinal cord dysfunction.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Harada Y (1983) Study on experimental spinal cord injuries by distraction using spinal cord evoked potentials (in Japanese). J Jpn Orthop Ass 57:685–701
Imai K, Kobayashi H, Nakagawa T, Inoue S, Tamaki T (1984) The experiences and analysis of the spinal cord monitoring during surgery. In: Homma S, Tamaki T (eds) Fundamentals and clinical application of spinal cord monitoring. Saikon Press, Tokyo, p 211
Imai T (1976) Human electrospinogram evoked by direct stimulation on the spinal cord through epidural space (in Japanese). J Jpn Orthop Ass 50:1037–1056
Tamaki T, Kobayashi H, Yamane T, Egashira T, Tsuji H, Inoue S (1977) Clinical application of evoked spinal cord action potential (in Japanese). Seikeigeka 28:681–689
Tamaki T (1979) Basic analysis of evoked spinal cord potential elicited by direct spinal cord stimulation. In: Nash CL (ed) Proceedings of the Spinal Cord Monitoring Workshop, Data Acquisition and Analysis, Cleveland, Case Western Reserve University, p 17
Tamaki T, Tsuji H, Inoue S, Kobayashi H (1981) The prevention of iatrogenic spinal cord injury utilizing the evoked spinal cord potential. Int Orthop 4:313–317
Tamaki T, Noguchi T, Takano H, Tsuji H, Nakagawa T, Imai K, Inoue S (1984) Spinal cord monitoring as a clinical utilization of the spinal evoked potential. Clin Orthop 184:58–64
Toyoda A, Kanda K (1984) Origins of spinal cord potentials evoked by stimulation of the cat spinal cord. In: Homma S, Tamaki T (eds) Fundamentals and clinical application of spinal cord monitoring. Saikon Press, Tokyo, p 99
Tsubokawa T, Moriyasu N (1974) The clinical evaluation of spinal electrogram in spinal cord injury (in Japanese). Rinshonoha 16:398–409
Tsubokawa T (1978) The spinal cord evoked potentials as an indicator for diagnosis of spinal cord injury (in Japanese). Rinshonoha 20:236–243
Tsuyama N, Tsuzuki N, Kurokawa T, Imai T (1978) Clinical application of spinal cord action potential measurement. Int Orthop 2:39–46
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1985 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Tamaki, T. et al. (1985). An Assessment of the Use of Spinal Cord Evoked Potentials in Prognosis Estimation of Injured Spinal Cord. In: Schramm, J., Jones, S.J. (eds) Spinal Cord Monitoring. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70687-5_26
Download citation
DOI: https://doi.org/10.1007/978-3-642-70687-5_26
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-70689-9
Online ISBN: 978-3-642-70687-5
eBook Packages: Springer Book Archive