Valeriani M, Restuccia D, Di Lazzaro V, Tonali P
Department of Neurology, Università Cattolica del Sacro Cuore, Rome, Italy.
Electroencephalogr Clin Neurophysiol. 1995 Sep;96(5):479-82. doi: 10.1016/0168-5597(95)00096-b.
We studied somatosensory evoked potentials (SEPs) to tibial nerve stimulation in two patients suffering from dorsal dural arteriovenous malformation (AVM). We found in both patients abnormalities in the lumbar N24 potential and in the cortical P40 response. After surgical removal of the AVM, the N24 recovered in both patients. Cord lesions probably occur in patients with dural AVM because of a theft of blood through the fistula; N24 recovery may therefore be associated with a restoration of blood supply after surgery. The N24 recovery in our patients with dural AVM suggests that the abnormality of this potential does not necessarily reflect irreversible damage to the lumbo-sacral cord and that the N24 recording can be useful in post-surgical monitoring.
我们对两名患有硬脊膜动静脉畸形（AVM）的患者进行了胫神经刺激的体感诱发电位（SEP）研究。我们发现两名患者的腰段N24电位和皮层P40反应均异常。手术切除AVM后，两名患者的N24均恢复。硬脊膜AVM患者可能因瘘管盗血而发生脊髓病变；因此，N24恢复可能与术后血供恢复有关。我们的硬脊膜AVM患者中N24恢复表明，该电位异常不一定反映腰骶脊髓的不可逆损伤，并且N24记录可用于术后监测。
