title: Standing myelography in the horse using a nonionic contrast agent.
abstract: Standing myelography in the horse has been previously described. In that study, metrizamide was used and significant complications were reported. In recent years, the introduction of less-toxic nonionic contrast media has reduced the incidence of complications. This study was undertaken to determine whether standing myelography using a nonionic contrast medium could provide a diagnostic study and be performed safely in the equine patient. Standing myelography was performed in eight horses. The contrast medium used was iohexol. In five horses a myelogram of diagnostic quality was achieved; in one horse contrast flowed only to the level of C6 and in two horses contrast medium did not reach the cervical subarachnoid space. Owing to the difficulty in achieving good flow of the contrast medium in some horses, this procedure may be of limited utility. However, if puncture of the lumbosacral subarachnoid space can be achieved easily and quickly, standing myelography may be a clinically useful procedure. It may be attempted in cases in which the economic value of the patient makes myelography under general anesthesia impractical. In patients presenting for evaluation of ataxia it may be possible to perform a standing myelogram at the time of CSF sample collection from the lumbosacral space.
authors.affiliation: Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PE, Canada. prose@upei.ca
authors.forename: Patricia L
authors.initials: PL
authors.lastname: Rose
authors.forename: Sameeh M
authors.initials: SM
authors.lastname: Abutarbush
authors.forename: Wendy
authors.initials: W
authors.lastname: Duckett
mesh_terms: D000818:Animals; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D003287:Contrast Media / Q000008:administration & dosage*; D005260:Female; D006734:Horse Diseases / Q000000981:diagnostic imaging*; D006736:Horses; D007278:Injections, Spinal / Q000662:veterinary; D008297:Male; D008793:Metrizamide / Q000008:administration & dosage*; D009192:Myelography / Q000662:veterinary*; D011187:Posture; D013116:Spinal Cord / Q000000981:diagnostic imaging*; D013122:Spinal Diseases / Q000000981:diagnostic imaging / Q000662:veterinary*; D013346:Subarachnoid Space / Q000000981:diagnostic imaging
chemical_list: D003287:Contrast Media; D008793:Metrizamide