title: Permanent monoparesis in a dog after intramedullary injection of iohexol into the lumbar spinal cord.
abstract: Abstract
  
  
  METHODS
  An 8-year-old, spayed, Doberman Pinscher bitch presented for assessment of acute hindlimb paresis.
  
  
  RESULTS
  During a lumbar myelographic contrast study a small volume of iohexol contrast agent was inadvertently injected into the cord parenchyma. After surgical hemilaminectomy for an intervertebral disc extrusion at L1-2 the dog recovered use of one hindlimb, but had ongoing extensor weakness of the left hindlimb. Left femoral nerve function had not returned after 14 months.
  
  
  METHODS
  EMG findings 14 months after the incident indicated persistent femoral neuropathy consistent with the intramedullary contrast injection at L3-4.
  
  
  CONCLUSIONS
  Inadvertent deposition of iohexol into spinal cord parenchyma may be rare, but if it occurs it can have long-lasting consequences.
authors.affiliation: Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand. b.j.leitch@massey.ac.nz
authors.forename: B J
authors.initials: BJ
authors.lastname: Leitch
authors.forename: A C
authors.initials: AC
authors.lastname: Hartman
authors.forename: I G
authors.initials: IG
authors.lastname: Mayhew
authors.forename: B R
authors.initials: BR
authors.lastname: Jones
authors.forename: A J
authors.initials: AJ
authors.lastname: Worth
mesh_terms: D000818:Animals; D003287:Contrast Media / Q000009:adverse effects*; D004283:Dog Diseases / Q000139:chemically induced*; D004285:Dogs; D005260:Female; D006614:Hindlimb / Q000473:pathology*; D007278:Injections, Spinal / Q000662:veterinary; D007472:Iohexol / Q000009:adverse effects*; D008508:Medication Errors / Q000662:veterinary*; D010243:Paralysis / Q000139:chemically induced / Q000662:veterinary*
chemical_list: D003287:Contrast Media; D007472:Iohexol