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Planning the microsurgical myelotomy in intramedullary tumors or cysts by intraoperative neuromonitoring = Izbira mikrokirurške mielotomije pri operacijah tumorjev in cist v hrbtenjači s pomočjo intraoperativnega nevromonitoringaPrestor, Borut ; Golob, Peter, 1971-Background. Surgical approach to the intramedullary tumors and cavities are microsurgical techniques of dorsal myelotomies, which entails the risk of damage to the dorsal columns and the central ... spinal cord gray matter. The aim of the study is to analyze the clinical sensory dysfunction before surgery andthe changes of the intraoperative SEP (somatosensory potentials) before myelotomy. These data would be of help to neurosurgeons in planning the myelotomy - dorsomedial or dorsolateral. Methods. 16 patients were operated onfor deafferentation pain syndromes, intramedullary tumors and syringomyelia of the cervical spinal cord. Preoperatively the patients sensory system of dorsal columns and central gray matter was examined for vibration and positionsense dysfunction and pain and temperature damage. Before myelotomy the intraoperative SEP from the dorsal surface of the spinal cord after the stimulation of the median and tibial nerves were recorded. Results. After median nerve stimulation the N13 wave was partially or completely absent, and fast negative waves appeared instead. The presence and absence of N13 was in association with pain and temperature dysfunction or with dissociative sensoryloss. The mean duration of the SEP potential was shorter than normal (p< 0. 0005, n = 11). After tibial nerve stimulation the first negative waves were most stabile, fast negative waves as the most prominent element of the normal SEP were partially or completely absent. This change was in associationwith diminution or loss of vibration and posture senses. The duration of the conductive SEP was shorter than normal (p = 0. 064, n = 5). Conclusions. Dissociative sensory loss is associated with absence of the N13 in median nerve SEP and connected to the central cord destruction. T'he loss of vibration and posture senses affects the fast negative waves of tibial SEP and points toward dama`e of the dorsal columns. (Abstract truncated at 2000 characters).Source: Zdravniški vestnik : glasilo Slovenskega zdravniškega društva = Slovenian medical journal = journal of Slovenian Medical Association. - ISSN 1318-0347 (Letn. 74, št. 4, apr. 2005, str. 203-209)Type of material - article, component partPublish date - 2005Language - englishCOBISS.SI-ID - 19253465
Author
Prestor, Borut |
Golob, Peter, 1971-
Topics
Spinal Cord Neoplasms |
Surgery |
Syringomyelia |
Surgery |
Microsurgery |
Intraoperative Monitoring |
Evoked Potentials, Somatosensory |
Magnetic Resonance Imaging |
Median Nerve |
Tibial Nerve |
Evocirani potenciali somatosenzorični |
Hrbtenjača, novotvorbe |
Mikrokirurgija |
Siringomielija |
Magnetna resonanca slikovna |
Mediani živec |
Tibialni živec |
hrbtenjača |
novotvorbe |
diagnostika |
zdravljenje |
mikrokirurgija
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source: Zdravniški vestnik : glasilo Slovenskega zdravniškega društva = Slovenian medical journal = journal of Slovenian Medical Association. - ISSN 1318-0347 (Letn. 74, št. 4, apr. 2005, str. 203-209)
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Prestor, Borut | 07031 |
Golob, Peter, 1971- | 90671 |
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