Biomaterial Database

[Dermatomal somatosensory evoked potentials in the diagnosis of focal lesions of the spinal cord]. 1995

J Prieto, and A Esteban

Sección de Neurofisiología Clínica, Hospital General Universitario Gregorio Marañón, Madrid.

We studied 13 patients suffering from localized spinal cord lesions by means of somatosensory evoked potentials obtained by electrical stimulation at various dermatome levels (SEPD). The results were compared to those of somatosensory evoked potentials obtained by stimulation of the posterior tibial nerve (SEPpt), as well as to clinical and radiologic data. Structural lesions could be demonstrated in 8 patients; in 5 patients, however, X-rays were normal and/or incompatible with symptoms. We found clear correlations among clinical or radiologic data and the level of lesion indicated by SEPD in all 13 patients. In one case SEPD were abnormal 6 months in advance of the first alteration in magnetic resonance imaging. Abnormal SEPD and SEPpt results were consistent, suggesting the existence of a common central pathway to carry stimuli. SEPD should be considered a useful, reliable technique for assessing spinal cord function, especially when no structural lesion can be demonstrated or when spinal injury is doubtful or when several segments are involved.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008475	Median Nerve	A major nerve of the upper extremity. In humans, the fibers of the median nerve originate in the lower cervical and upper thoracic spinal cord (usually C6 to T1), travel via the brachial plexus, and supply sensory and motor innervation to parts of the forearm and hand.	Median Nerves,Nerve, Median,Nerves, Median
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D010525	Peripheral Nerves	The nerves outside of the brain and spinal cord, including the autonomic, cranial, and spinal nerves. Peripheral nerves contain non-neuronal cells and connective tissue as well as axons. The connective tissue layers include, from the outside to the inside, the epineurium, the perineurium, and the endoneurium.	Endoneurium,Epineurium,Perineurium,Endoneuriums,Epineuriums,Nerve, Peripheral,Nerves, Peripheral,Perineuriums,Peripheral Nerve
D004558	Electric Stimulation	Use of electric potential or currents to elicit biological responses.	Stimulation, Electric,Electrical Stimulation,Electric Stimulations,Electrical Stimulations,Stimulation, Electrical,Stimulations, Electric,Stimulations, Electrical
D004806	Ependymoma	Glioma derived from EPENDYMOGLIAL CELLS that tend to present as malignant intracranial tumors in children and as benign intraspinal neoplasms in adults. It may arise from any level of the ventricular system or central canal of the spinal cord. Intracranial ependymomas most frequently originate in the FOURTH VENTRICLE and histologically are densely cellular tumors which may contain ependymal tubules and perivascular pseudorosettes. Spinal ependymomas are usually benign papillary or myxopapillary tumors. (From DeVita et al., Principles and Practice of Oncology, 5th ed, p2018; Escourolle et al., Manual of Basic Neuropathology, 2nd ed, pp28-9)	Ependymoma, Myxopapillary,Ependymoma, Papillary,Anaplastic Ependymoma,Cellular Ependymoma,Clear Cell Ependymoma,Papillary Ependymoma,Anaplastic Ependymomas,Ependymoma, Anaplastic,Ependymomas,Ependymomas, Anaplastic,Ependymomas, Myxopapillary,Ependymomas, Papillary,Myxopapillary Ependymoma,Myxopapillary Ependymomas,Papillary Ependymomas
D005073	Evoked Potentials, Somatosensory	The electric response evoked in the CEREBRAL CORTEX by stimulation along AFFERENT PATHWAYS from PERIPHERAL NERVES to CEREBRUM.	Somatosensory Evoked Potentials,Evoked Potential, Somatosensory,Somatosensory Evoked Potential
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293	Adolescent	A person 13 to 18 years of age.	Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths