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J Neurosurg Spine. 2017 Jul;27(1):63-67. doi: 10.3171/2016.12.SPINE16540. Epub 2017 Apr 21.

Reversible postoperative blindness caused by bilateral status epilepticus amauroticus following thoracolumbar deformity correction: case report.

Author information

1
Departments of 1 Neurosurgery and.
2
Neurology, Loyola University Medical Center, Maywood, Illinois.

Abstract

Postoperative vision loss (POVL) is a devastating complication and has been reported after complex spine procedures. Anterior ischemic optic neuropathy and posterior optic neuropathy are the 2 most common causes of POVL. Bilateral occipital lobe seizures causing complete blindness are rare and have not been reported as a cause of POVL after spine surgery with the patient prone. The authors report the case of a 67-year-old man without a history of seizures who underwent a staged thoracolumbar deformity correction and developed POVL 6 hours after surgery. Imaging, laboratory, and ophthalmological examination results were nonrevealing. Routine electroencephalography study results were negative, but continuous electroencephalography captured bilateral occipital lobe seizures. The patient developed nonconvulsive status epilepticus despite initial treatment with benzodiazepines and loading doses of levetiracetam and lacosamide. He was therefore intubated for status epilepticus amauroticus and received a midazolam infusion. After electrographic seizure cessation for 48 hours, the patient was weaned off midazolam. The patient was maintained on levetiracetam and lacosamide without seizure recurrence and returned to his preoperative visual baseline status.

KEYWORDS:

AION = anterior ischemic optic neuropathy; EBL = estimated blood loss; EEG = electroencephalography; PION = posterior ischemic optic neuropathy; POVL = postoperative vision loss; PRES = posterior reversible encephalopathy syndrome; SEA = status epilepticus amauroticus; blindness; complication; postoperative; sagittal imbalance; seizure

PMID:
28430051
DOI:
10.3171/2016.12.SPINE16540
[Indexed for MEDLINE]

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