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Loss of evoked potentials during spinal surgery due to spinal cord hemorrhage
Author(s) -
Shukla R.,
Docherty T. B.,
Jackson R. K.,
Weller R. O.,
Sedgwick E. M.
Publication year - 1988
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410240217
Subject(s) - medicine , spinal cord , somatosensory evoked potential , lesion , autopsy , surgery , anesthesia , anterior horn , pathology , psychiatry
The cortical somatosensory evoked potential (September) disappeared during corrective spinal surgery in a patient with muscular dystrophy. The patient died 18 hours after surgery. Autopsy revealed an intramedullary hemorrhage 4 mm in diameter in the posterior horn of the cervical spinal cord. Microscopically, hypoxic neurons were seen adjacent to the hemorrhagic area, implying that the lesion was at least 6 hours old. The hemorrhage corresponded to the loss of Septembers and confirms that spinal cord monitoring can detect such lesions.